Knife - Essential Tool for Camping, Outdoor Adventure and collection

If you're looking for a reliable companion for your outdoor adventures, the ONTOS II fixed blade knife is the choice for you. Perfect for those who enjoy camping, hiking, and hiking, this knife is designed to offer the perfect balance of light weight, durability, and exceptional performance. Its name, inspired by the Greek word “ontos,” meaning “the essence,” embodies the perfect blend of strength and versatility. With a forprene handle designed to provide a secure and comfortable grip, ONTOS II allows you to work with precision even in the most difficult conditions, offering total control even when the weather is inclement.

The full flat blade is designed for a precise, deep cut, ensuring high performance and durability. Its well-balanced construction allows you to tackle any task, whether it's cutting wood, thin branches, paracord or ropes. ONTOS II will never let you down, offering reliability and consistent performance in any situation.

The ONTOS II S600 Black is the ideal choice for those seeking exceptional performance and unparalleled wear resistance. With its vibrant green-colored handle, it stands out not only for its aesthetics, but also for the quality of the materials used. Made of Böhler S600 steel, a top-grade material used in the production of metalworking tools, this tool is cryogenically treated to ensure an extraordinary hardness of 64 HRC. The Teflon-based “EXP DARK” coating, developed by Extrema Ratio, further enhances its durability and performance. Complemented by a green thigh scabbard with M.O.L.L.E. system, the ONTOS II S600 Black is ready to be easily integrated into your gear, ensuring practicality and durability in any situation.

Intended Use: Heavy Utility / Hiking
Production type: Industrial
Country of manufacture: Italy
Blade: S600 steel at 64HRC
Surface treatment: Exp Dark
Handle: Forprene
Blade length: 167mm.
Blade thickness: 6mm.
Total length: 299mm.
Balance: advanced
Weight: 344g.
Sheath: nylon, MOLLE compatible
Packaging: cardboard box with Extrema Ratio logos
Notes: blade made of high carbon steel, always keep well cleaned and oiled during storage to prevent rust and oxidation

If you're looking for a reliable companion for your outdoor adventures, the ONTOS II fixed blade knife is the choice for you. Perfect for those who enjoy camping, hiking, and trekking, this knife is designed to offer the perfect balance of light weight, durability, and exceptional performance. Its name, inspired by the Greek word “ontos,” meaning “the essence,” embodies the perfect blend of strength and versatility. With a forprene handle designed to provide a secure and comfortable grip, ONTOS II allows you to work with precision in even the most difficult conditions, offering total control even when the weather is inclement.

The full flat blade is designed for a precise, deep cut, ensuring high performance and durability. Its well-balanced construction allows you to tackle any task, whether it's cutting wood, thin branches, paracord or ropes. ONTOS II will never let you down, offering reliability and consistent performance in any situation.

The ONTOS II Expeditions version is designed for those who demand the ultimate in performance and reliability. The knife features a desert-colored handle and is made of Böhler N690 steel, treated to 58 HRC with a stone-washed finish and MIL-C-13924 burnishing to ensure optimal strength, long edge life and protection against oxidation. It comes with a desert Cordura scabbard with MOLLE system, which includes a mini pouch with a flammable paracord lanyard for emergencies and a Firesteel for lighting fires, so you're always ready even in the most critical situations.

With ONTOS II, every adventure will be supported by a knife that combines superior performance, functionality and durability, making you feel ready to face any challenge.

Intended Use: Heavy Utility / Hiking
Production Type: Industrial
Country of manufacture: Italy
Blade: N690Co 58HRC stainless steel
Surface Treatment: Burnishing MIL-C-13924 Stone Washed
Handle: Forprene
Blade Length: 167mm.
Blade thickness: 6mm.
Total length: 299mm.
Balance: advanced
Weight: 311g.
Sheath: nylon, MOLLE compatible, with detachable front sheath
Packaging: cardboard box with Extrema Ratio logos.
Notes: includes a firesteel (tinder) and a firecord (flammable paracord thread) for lighting emergency fires

Born out of the growing demand of demanding professionals, Extrema Ratio presents ONTOS - a field knife designed to meet any challenge. The name, derived from the Greek “the thing,” represents the perfect synthesis of toughness, versatility and reliability. Compact yet extremely durable, ONTOS is the ideal companion in any situation, thanks to its partially serrated blade that always ensures a sharp, ready-to-use cut.

Its nylon thigh scabbard, equipped with the MOLLE system, is designed to stay firmly anchored even in the harshest conditions, when the soldier is forced to give up his primary tactical equipment. And for those seeking an extra level of preparedness, a survival kit, purchased separately, is available to attach directly to the knife sheath.

Intended Use: Heavy Utility
Production Type: Industrial
Country of manufacture: Italy
Blade: N690Co 58HRC stainless steel
Surface treatment: Burnishing MIL-C-13924
Handle: Forprene
Blade length: 168mm.
Blade thickness: 6.3mm.
Total length: 299mm.
Balance: advanced
Weight: 411g.
Sheath: nylon, MOLLE compatible
Packaging: cardboard box with Extrema Ratio logos
Notes: -

Numen: The Force at Your Side
Discover the Numen survival knife, inspired by the ancient Roman concept of “numen,” an invisible force that guides and protects in decisive moments. Not just a tool, but a powerful and discreet ally, ready to support you in the most extreme situations.

Designed in collaboration with Daniele Dal Canto, an AIGS (Italian Association of Survival Guides) guide, Numen is the perfect synthesis of sturdiness, versatility and functionality. Made to face the toughest challenges, this knife will become your silent but determined companion, always ready to respond to your needs.

Unbeatable Ruggedness and Performance
The full tang construction ensures absolute strength and perfect balance, making Numen ideal for a wide range of tasks, including felling, debarking, batoning, chopping and woodworking. The blade, designed for heavy-duty work, is also precise enough for detailed cuts, maintaining outstanding strength even after prolonged use.

Ergonomic Handle for Maximum Safety
The ergonomic G10 handle ensures a secure grip in all conditions, even with wet hands or work gloves. Thanks to its comfortable, non-slip shape, you can use Numen with ease and safety in any situation, from hiking to emergencies.

Cordura sheath for Maximum Practicality
Each Numen knife comes with a black Cordura sheath, equipped with a M.O.L.L.E.-compatible attachment system, adaptable for both left- and right-handed people. Practical, safe and easy to carry with you at all times.

Intended Use: Hiking/Survival

Type of production: Industrial
Country of manufacture: Italy
Blade: full tang, S600 carbon steel at 64HRC
Blade treatment: Black Exp Dark
Handle: G10
Blade length: 210mm.
Blade thickness: 6mm.
Total length: 382mm.
Weight: 632g.
Sheath: cordura, belt-mounted, ambidextrous, M.O.L.L.E. compatible.
Packaging: cardboard box with Extrema Ratio logos

Numen: The Force at Your Side
Discover the Numen survival knife, inspired by the ancient Roman concept of “numen,” an invisible force that guides and protects in decisive moments. Not just a tool, but a powerful and discreet ally, ready to support you in the most extreme situations.

Designed in collaboration with Daniele Dal Canto, an AIGS (Italian Association of Survival Guides) guide, Numen is the perfect synthesis of sturdiness, versatility and functionality. Made to face the toughest challenges, this knife will become your silent but determined companion, always ready to respond to your needs.

Unbeatable Ruggedness and Performance
The full tang construction ensures absolute strength and perfect balance, making Numen ideal for a wide range of tasks, including felling, debarking, batoning, chopping and woodworking. The blade, designed for heavy-duty work, is also precise enough for detailed cuts, maintaining outstanding strength even after prolonged use.

Ergonomic Handle for Maximum Safety
The ergonomic G10 handle ensures a secure grip in all conditions, even with wet hands or work gloves. Thanks to its comfortable, non-slip shape, you can use Numen with ease and safety in any situation, from hiking to emergencies.

Cordura sheath for Maximum Practicality
Each Numen knife comes with a black Cordura sheath, equipped with a M.O.L.L.E.-compatible attachment system, adaptable for both left- and right-handed people. Practical, safe and easy to carry with you at all times.

Intended Use: Hiking/Survival

Type of production: Industrial
Country of manufacture: Italy
Blade: full tang, 58HRC Bohler N690Co stainless steel
Blade treatment: Satin finish
Handle: G10
Blade length: 210mm.
Blade thickness: 6mm.
Total length: 382mm.
Weight: 632g.
Sheath: cordura, belt-mounted, ambidextrous, M.O.L.L.E. compatible.
Packaging: cardboard box with Extrema Ratio logos.

Extrema Ratio introduces three new color variants of the Shrapnel One: Total Black, Desert Dark Stone and Black Satin, maintaining the ruggedness and reliability of the original with a touch of style. This multi-role knife is ideal for bushcraft, outdoor and survival enthusiasts, perfect for both military and contractor activities. The 157 mm fixed blade, made of Böhler N690 steel (58 HRC), offers an optimal balance of hardness and strength, making it perfect for activities such as cutting wood or challenging situations.

The forprene handle provides a secure and comfortable grip, even in difficult conditions, while the full-flat rounded blade ensures excellent cutting power. The design includes a hand guard that enhances safety and ergonomics. The back of the blade features thumb serrations, increasing grip.

The ambidextrous Cordura sheath is durable and secure, featuring a blade lock that ensures safe carrying. With a MOLLE system on both sides, the scabbard can be easily attached to tactical vests and belts, with adjustable height and position for right- and left-handed people. Choose your version and get ready to explore!

Intended Use: Tactical/Military

Production type: Industrial
Country of manufacture: Italy
Blade: N690Co stainless steel hardened to 58HRC
Blade finish: Satin finish
Handle: Forprene
Blade length: 157mm.
Blade thickness: 6.3mm. on handle, 4mm. on blade
Total length: 287mm.
Weight: 289g.
Sheath: ambidextrous, cordura, compatible with M.O.L.L.E. system.
Packaging: cardboard box with Extrema Ratio logos
Notes: -

Extrema Ratio introduces three new color variations of the Shrapnel One model: Total Black, Desert Dark Stone and Black Satin, maintaining the ruggedness and reliability of the original with a stylish twist. This multi-role knife is ideal for bushcraft, outdoor and survival enthusiasts, perfect for both military and contractor activities. The 157 mm fixed blade, made of Böhler N690 steel (58 HRC), offers an optimal balance of hardness and strength, making it perfect for activities such as cutting wood or challenging situations.

The forprene handle provides a secure and comfortable grip, even in difficult conditions, while the full-flat rounded blade ensures excellent cutting power. The design includes a hand guard that enhances safety and ergonomics. The back of the blade features thumb serrations, increasing grip.

The ambidextrous Cordura sheath is durable and secure, featuring a blade lock that ensures safe carrying. With a MOLLE system on both sides, the scabbard can be easily attached to tactical vests and belts, with adjustable height and position for right- and left-handed people. Choose your version and get ready to explore!

Intended Use: Tactical/Military

Production type: Industrial
Country of manufacture: Italy
Blade: stainless steel N690Co hardened to 58HRC
Blade Finish: Dark Stonewashed
Handle: Forprene
Blade length: 157mm.
Blade thickness: 6.3mm. on handle, 4mm. on blade
Total length: 287mm.
Weight: 289g.
Sheath: ambidextrous, cordura, compatible with M.O.L.L.E. system.
Packaging: cardboard box with Extrema Ratio logos
Notes: -

Extrema Ratio introduces three new color variations of the Shrapnel One model: Total Black, Desert Dark Stone and Black Satin, maintaining the ruggedness and reliability of the original with a stylish twist. This multi-role knife is ideal for bushcraft, outdoor and survival enthusiasts, perfect for both military and contractor activities. The 157 mm fixed blade, made of Böhler N690 steel (58 HRC), offers an optimal balance of hardness and strength, making it perfect for activities such as cutting wood or challenging situations.

The forprene handle provides a secure and comfortable grip, even in difficult conditions, while the full-flat rounded blade ensures excellent cutting power. The design includes a hand guard that enhances safety and ergonomics. The back of the blade features thumb serrations, increasing grip.

The ambidextrous Cordura sheath is durable and secure, featuring a blade lock that ensures safe carrying. With a MOLLE system on both sides, the scabbard can be easily attached to tactical vests and belts, with adjustable height and position for right- and left-handed people. Choose your version and get ready to explore!

Intended Use: Tactical/Military

Production type: Industrial
Country of manufacture: Italy
Blade: stainless steel N690Co hardened to 58HRC
Blade Finish: Burnishing MIL-C-13924
Handle: Forprene
Blade length: 157mm.
Blade thickness: 6.3mm. on handle, 4mm. on blade
Total length: 287mm.
Weight: 289g.
Sheath: ambidextrous, cordura, compatible with M.O.L.L.E. system.
Packaging: cardboard box with Extrema Ratio logos
Notes: -

Unabashedly Italic!

The LKU01 URBAN, developed by Extrema Ratio with Danilo Rossi Lajolo di Cossano, combines Italian tradition and design. The Böhler N690 steel blade offers hardness and strength, while the quick release mechanism makes it easy to use. Free of traditional guards, it is safe and easy to handle. The aluminum grips provide grip and recall the sartorial aesthetic. It is versatile, stylish and perfect for close combat.

Intended use: EDC / CQC

Type of production: industrial
Country of Manufacture: Italy
Blade: stainless steel N690Co 58HRC
Blade Finish: Burnishing MIL-C-13924
Handle: Anticorodal
Blade length: 100mm.
Blade thickness: 4mm.
Length closed: 124mm.
Total length: 223mm.
Weight: 123g.
Closure: Liner Lock
Clip: reversible and removable, stainless steel
Notes: Design by Danilo Rossi Lajolo di Cossano

Unabashedly Italic!

The LKU01 URBAN, developed by Extrema Ratio with Danilo Rossi Lajolo di Cossano, combines Italian tradition and design. The Böhler N690 steel blade offers hardness and strength, while the quick release mechanism makes it easy to use. Free of traditional guards, it is safe and easy to handle. The aluminum grips provide grip and recall the sartorial aesthetic. It is versatile, stylish and perfect for close combat.

Intended use: EDC / CQC

Type of production: industrial
Country of Manufacture: Italy
Blade: stainless steel N690Co 58HRC
Blade Finish: Sandblast
Handle: Anticorodal
Blade length: 100mm.
Blade thickness: 4mm.
Length closed: 124mm.
Total length: 223mm.
Weight: 123g.
Closure: Liner Lock
Clip: reversible and removable, stainless steel
Notes: Design by Danilo ROssi Lajolo di Cossano

The RANGER model is an ideal fixed knife for the camping kitchen thanks to its high blade; lightweight and easy to handle, it features a slim, ergonomic handle enhanced by a surface texture that ensures a secure grip in any situation.

Intended Use: Outdoor / Camp Kitchen

Type of production: Industrial
Country of Production: Italy
Blade: Full Tang in N690Co stainless steel
Blade finish: Stonewashed
Handle: Micarta
Blade Length: 117mm.
Blade thickness: 4mm.
Total length: 226mm.
Weight: 150g.
Sheath: leather
Packaging: cardboard box with Viper logos
Notes: Design by Jens Anso

The RANGER model is a fixed knife ideal for the camping kitchen thanks to its high blade; lightweight and easy to handle, it features a slim, ergonomic handle enhanced by a surface texture that ensures a secure grip in any situation.

The handle uses the brand new UltreX composite, a perfect material for modified G-10 handles. SureTouch is a revolutionary new patent-pending process that combines layers of G-10 with rubber. Now you can have the strength and durability of G-10 with the grip and non-slip properties of rubber, all in one material. 

The combination of G-10 and rubber offers one of the most revolutionary advantages on the market. Because G10 is commonly processed for the knife and gun industry, this new material allows for greater ease of use. SureTouch allows for improved grip and comfort.

Intended Use: Outdoor / Field Kitchen

Type of production: Industrial
Country of Production: Italy
Blade: Full Tang in N690Co stainless steel
Blade Finish: Stonewashed
Handle: UltreX SureTouch
Blade length: 117mm.
Blade thickness: 4mm.
Total length: 226mm.
Weight: 150g.
Sheath: leather
Packaging: cardboard box with Viper logos
Notes: Design by Jens Anso

Versa combines innovative design with unparalleled functionality. The name “Versa” perfectly embodies the characteristics of this knife: its versatility makes it suitable for a variety of situations, showing its adaptability both in urban environments as an EDC (Every Day Carry) knife and in more adventurous settings such as outdoor, survival, bushcraft, hunting and even tactical scenarios. It is also ideal as a backup knife. This knife is ready to meet every need by combining style and practicality in one tool. Versa comes in two distinct models: Versa Satin, perfect for everyday use and Versa Expeditions, more suitable in outdoor, survival and bushcraft settings.

Intended Use: Neck Knife / Hiking / Utility

Type of production: industrial
Country of manufacture: Italy
Blade: full tang, stainless steel N690Co at 58HRC
Blade finish: burnishing MIL-C-13924 with Dark Stone finish
Handle: monolithic, pierced, stainless steel N690Co at 58HRC
Blade length: 80mm.
Blade thickness: 6.3mm.
Total length: 180mm.
Weight: 110g.
Sheath: made of Kydex, for neck
Packaging: cardboard box with Extrema Ratio logos
Notes: Firesteel and kydex sheath included in package

Oniro is a knife that was born out of Viper's first collaboration with Denis Simonutti, as well as the first Viper folding knife to employ the crossbar lock, a safe and practical lock system to use.

With compact dimensions and an ergonomic design, this knife stands out for its adaptability and reliability. Ribs on the handle provide a firm and comfortable grip, allowing precise control in any situation. The Magnacut steel drop blade of this knife offers impeccable cutting precision, making it an indispensable tool for any task.

Innovative, durable and ready to overcome any challenge, our new Oniro knife is the ideal choice for those seeking maximum functionality without compromising on quality.

Intended Use: EDC / Sporting

Type of production: Industrial
Country of manufacture: Italy
Blade: CPM-Magnacut steel
Blade Finish: Stonewashed
Handle: Micarta with internal stainless steel folders and steel spacers
Blade Length: 85mm.
Blade thickness: 3.5mm.
Length when closed: 106mm.
Total length: 188mm.
Handle thickness: 14mm.
Weight: 106g.
Locking system: Crossbar Lock
Clip: Removable, contoured titanium
Packaging: Cardboard box with Viper logos
Notes: Design by Denis Simonutti

FAT BOY is the strongest fixed-blade knife ever produced by Extrema Ratio. This is the first knife produced from N690Co steel (58HRC) with a thickness of as much as 8.6mm. The total weight of this model is 1kg.

The blade, which features a full flat rounding, has a special tip structure that not only combines the ability to penetrate with the possibility of use as a wedge, but at the same time allows the main cutting edge to be safeguarded. Its shape and width also enable it to dig small holes in the ground in emergency situations.

The back, which is thick and flat at the end, gives the tool more mass and beating surface useful for hammering and planting stakes. Fat Boy has a handle composed of 2 black-colored G10 material grips made with Extrema Ratio's new original design. Removable and replaceable, they allow for inspections and checks underneath the handle and allow for paracord mounting.

Intended Use: Heavy Duty

Production type: Industrial
Country of manufacture: Italy
Blade: full tang, made of Bohler N690Co stainless steel at 58HRC
Blade treatment: Dark Stonewashed
Handle: G10
Blade length: 210mm.
Blade thickness: 8.6mm.
Total length: 350mm.
Weight: 1008g.
Sheath: cordura, belt-mounted, MOLLE compatible
Packaging: cardboard box with Extrema Ratio logos.

FAT BOY is the strongest fixed blade knife Extrema Ratio has ever produced. It is the first knife made of N690Co steel (58HRC) with a thickness of 8.6 mm. The total weight of this model is 1 kg.

The blade, characterized by a completely flat edge, has a special tip structure that not only combines the ability to penetrate with the possibility of using it as a wedge, but also protects the main cutting edge. Thanks to its shape and width, it can also dig small holes in the ground in emergency situations.

The thick spine, flat at the end, gives the tool greater mass and a striking surface that is useful for driving stakes and hammers. Fat Boy has a handle made of 2 black G10 handle scales in the new original Extrema Ratio design. They are removable and interchangeable and allow inspections and checks under the handle as well as the attachment of paracord.

Intended use: Heavy Duty

Type of production: Industrial
Country of manufacture: Italy
Blade: Full tang, 58HRC Bohler N690Co stainless steel
Blade treatment: Dark stonewashed
Handle: G10
Length of the blade: 210mm.
Thickness of the blade: 8.6 mm.
Total length: 350 mm.
Weight: 1008g.
Sheath: Cordura, belt, MOLLE compatible
Packaging: Cardboard box with Extrema Ratio logos

The Nordlys is a fixed blade full tang knife with a partially concealed tang. The slim, ergonomic handle is made of suretouch and features a three-dimensional textured surface for a secure and comfortable grip. This elegant tool comes with a high-quality genuine leather sheath.

The handle uses the brand new UltreX composite, a perfect material for modified G-10 grips. SureTouch is a revolutionary new patent-pending process that combines layers of G-10 with rubber. Now you can have the strength and durability of G-10 with the grip and non-slip properties of rubber, all in one material. 

Jens Ansø is a renowned Danish knife designer. Since 2001, he has been creating unique knives by combining functionality and aesthetics. Ansø is known for using high-quality materials and innovative designs. He collaborates with prestigious brands and produces custom knives that are appreciated by collectors and users worldwide.

Intended Use: Outdoor & Hunting

Type of production: Industrial
Country of Production: Italy
Blade: Full Tang in N690Co stainless steel
Blade Finish: Stonewashed
Handle: UltreX SureTouch
Blade Length: 97mm.
Blade thickness: 4mm.
Total length: 207mm.
Weight: 146g.
Sheath: leather
Packaging: cardboard box with Viper logos
Notes: Design by Jens Anso

The Nordlys is a fixed blade full tang knife with a partially concealed tang. The slim, ergonomic handle is made of carbon fiber, wood, suretouch or micarta and features a three-dimensional textured surface for a secure and comfortable grip. This elegant instrument comes with a high-quality genuine leather sheath for protection and durability, making it ideal for discerning enthusiasts and collectors.

Jens Ansø is a renowned Danish knife designer. Since 2001, he has been creating unique knives by combining functionality and aesthetics. Ansø is known for using high-quality materials and innovative designs. He collaborates with prestigious brands and produces custom knives that are appreciated by collectors and users worldwide.

Intended Use: Outdoor & Hunting

Type of production: Industrial
Country of Production: Italy
Blade: Full Tang in N690Co stainless steel
Blade Finish: Stonewashed
Handle: Micarta
Blade Length: 97mm.
Blade thickness: 4mm.
Total length: 207mm.
Weight: 146g.
Sheath: leather
Packaging: cardboard box with Viper logos
Notes: Design by Jens Anso

The Nordlys is a fixed blade full tang knife with a partially concealed tang. The slim, ergonomic handle is made of carbon fiber, wood, suretouch or micarta and features a three-dimensional textured surface for a secure and comfortable grip. This elegant instrument comes with a high-quality genuine leather sheath for protection and durability, making it ideal for discerning enthusiasts and collectors.

Jens Ansø is a renowned Danish knife designer. Since 2001, he has been creating unique knives by combining functionality and aesthetics. Ansø is known for using high-quality materials and innovative designs. He collaborates with prestigious brands and produces custom knives that are appreciated by collectors and users worldwide.

Intended Use: Outdoor & Hunting

Type of production: Industrial
Country of Production: Italy
Blade: Full Tang in N690Co stainless steel
Blade Finish: Satin finish
Handle: Carbon fiber
Blade Length: 97mm.
Blade thickness: 4mm.
Total length: 207mm.
Weight: 146g.
Sheath: leather
Packaging: cardboard box with Viper logos
Notes: Design by Jens Anso

The blade of the BF2 CD M390 TACTICAL GREY, featuring a flat rounding and a particularly thick and durable drop tip, is coated with a Diamond-Like Carbon (DLC) surface treatment. This coating makes the blade extremely resistant to abrasion and chemical attack, ensuring optimal performance over time.

The steel used for the blade is Böhler M390, heat-treated to 61 HRC. Using a powder metallurgical manufacturing process, this steel offers high cutting efficiency, wear and oxidation resistance, making it an excellent choice for those seeking quality and durability.

The handle, in the new "Tactical Grey" coloring, is composed of 2 full gauntlets with characteristic lowered planes to engage the opening "pins" without them protruding from the profile of the closed knife. This design ensures a firm and comfortable grip, ensuring safe and convenient use.

Intended Use: Tactical/Military

Type of production: industrial
Country of Manufacture: Italy
Blade: stainless steel M390 at 61HRC
Blade finish: DLC (Diamond Like Carbon)
Handle: Anticorodal
Blade length: 90mm.
Blade thickness: 3mm.
Length closed: 124mm.
Total length: 210mm.
Weight: 140g.
Closure: Liner Lock
Clip: reversible and removable, burnished stainless steel
Notes: manual safety lock when knife is open

T4000S is a reworking of the Japanese Wakizashi short sword that the Samurai carried at all times in contact with the body. It is a timeless tactical tool that does not follow any fashion but faithfully respects the Extrema Ratio philosophy aimed at fulfilling all functional requirements.

This model continues Extrema Ratio's purest Tanto series designed especially for lovers of the Japanese blade profile, who do not want to give up typical tactical accessories such as textile sheath and special polymer handle. The blade is made of Bohler N690 steel, heat-treated to a hardness of 58 HRC.

The handle, in black coloring, is made of Forprene, an elastomer whose exceptional resistance to extreme conditions makes it part of the "NATO standard." The black-colored Cordura scabbard is and equipped with a MOLLE system that allows it to be carried on tactical vests and general belts and ensures that the razor-sharp blade can be carried in total safety by protecting it from shocks that could reduce its efficiency.

Intended Use: Tactical

Type of production: Industrial
Country of manufacture: Italy
Blade: Bohler N690Co stainless steel at 58HRC
Blade treatment: satin finish
Handle: Forprene
Blade length: 174mm.
Blade thickness: 4mm.
Total length: 304mm.
Weight: 264g.
Sheath: Nylon
Packaging: Cardboard box with Extrema Ratio logos.

The Viper Handy is an innovative and compact fixed knife designed to offer an optimal user experience through the use of advanced manufacturing technologies and high-quality materials. Designed by master knife maker Fabrizio Silvestrelli.

The Viper Handy, with its CPM MagnaCut steel fixed blade, offers high strength and exceptional durability. The stonewashed finish adds a touch of elegance and practicality, reducing the visibility of scratches during use. The 3D-machined, natural canvas micarta handle fits perfectly in the hand, providing a secure and precise grip.

The handle's tang, tapered toward the back, promotes optimal balance of the knife, reducing fatigue during prolonged use. This makes the Viper Handy ideal for outdoor and hunting activities, as well as tactical operations where precision and endurance are essential.

Intended Use: Outdoor & Hunting

Production type: Industrial
Country of Production: Italy
Blade: Full Tang stainless steel CMP MagnaCut
Blade Finish: Dark Stonewashed
Handle: Ulterm transparent amber color
Blade length: 82mm.
Blade thickness: 4mm.
Total length: 180mm.
Weight: 115g.
Sheath: kydex
Packaging: cardboard box with Viper logos
Notes: Design by Fabrizio Silvestrelli

The Viper Handy is an innovative and compact fixed knife designed to provide an optimal user experience through the use of advanced manufacturing technologies and high-quality materials. Designed by master knife maker Fabrizio Silvestrelli.

The Viper Handy, with its CPM MagnaCut steel fixed blade, offers high strength and exceptional durability. The stonewashed finish adds a touch of elegance and practicality, reducing the visibility of scratches during use. The 3D-machined, natural canvas micarta handle fits perfectly in the hand, providing a secure and precise grip.

The handle's tang, tapered toward the back, promotes optimal balance of the knife, reducing fatigue during prolonged use. This makes the Viper Handy ideal for outdoor and hunting activities, as well as tactical operations where precision and endurance are essential.

Intended Use: Outdoor & Hunting

Production type: Industrial
Country of Production: Italy
Blade: Full Tang stainless steel CMP MagnaCut
Blade Finish: Dark Stonewashed
Handle: Canvas Micarta
Blade Length: 82mm.
Blade thickness: 4mm.
Total length: 180mm.
Weight: 115g.
Sheath: kydex
Packaging: cardboard box with Viper logos
Notes: Design by Fabrizio Silvestrelli

The Viper Handy is an innovative and compact fixed knife designed to provide an optimal user experience through the use of advanced manufacturing technologies and high-quality materials. Designed by master knife maker Fabrizio Silvestrelli.

The Viper Handy, with its CPM MagnaCut steel fixed blade, offers high strength and exceptional durability. The stonewashed finish adds a touch of elegance and practicality, reducing the visibility of scratches during use. The 3D-machined, natural canvas micarta handle fits perfectly in the hand, providing a secure and precise grip.

The handle's tang, tapered toward the back, promotes optimal balance of the knife, reducing fatigue during prolonged use. This makes the Viper Handy ideal for outdoor and hunting activities, as well as tactical operations where precision and endurance are essential.

Intended Use: Outdoor & Hunting

Production type: Industrial
Country of Production: Italy
Blade: Full Tang stainless steel CMP MagnaCut
Blade Finish: Dark Stonewashed
Handle: Canvas Micarta
Blade Length: 82mm.
Blade thickness: 4mm.
Total length: 180mm.
Weight: 115g.
Sheath: kydex
Packaging: cardboard box with Viper logos
Notes: Design by Fabrizio Silvestrelli

The Viper Handy is an innovative and compact fixed knife designed to offer an optimal user experience through the use of advanced manufacturing technologies and high-quality materials. Designed by master knife maker Fabrizio Silvestrelli.

The Viper Handy, with its CPM MagnaCut steel fixed blade, offers high strength and exceptional durability. The stonewashed finish adds a touch of elegance and practicality, reducing the visibility of scratches during use. The 3D-machined, natural canvas micarta handle fits perfectly in the hand, providing a secure and precise grip.

The handle's tang, tapered toward the back, promotes optimal balance of the knife, reducing fatigue during prolonged use. This makes the Viper Handy ideal for outdoor and hunting activities, as well as tactical operations where precision and endurance are essential.

Intended Use: Outdoor & Hunting

Production type: Industrial
Blade Production: Italy
Blade: Full Tang in CMP MagnaCut stainless steel
Blade Finish: Satin finish
Handle: bocote wood
Blade length: 82mm.
Blade thickness: 4mm.
Total length: 180mm.
Weight: 115g.
Sheath: leather
Packaging: cardboard box with Viper logos
Notes: Design by Fabrizio Silvestrelli

The Viper Handy is an innovative and compact fixed knife designed to provide an optimal user experience through the use of advanced manufacturing technologies and high-quality materials. Designed by master knife maker Fabrizio Silvestrelli.

The Viper Handy, with its CPM MagnaCut steel fixed blade, offers high strength and exceptional durability. The stonewashed finish adds a touch of elegance and practicality, reducing the visibility of scratches during use. The 3D-machined, natural canvas micarta handle fits perfectly in the hand, providing a secure and precise grip.

The handle's tang, tapered toward the back, promotes optimal balance of the knife, reducing fatigue during prolonged use. This makes the Viper Handy ideal for outdoor and hunting activities, as well as tactical operations where precision and endurance are essential.

Intended Use: Outdoor & Hunting

Production type: Industrial
Country of Production: Italy
Blade: Full Tang stainless steel CMP MagnaCut
Blade Finish: Stonewashed
Handle: Canvas Micarta
Blade Length: 82mm.
Blade thickness: 4mm.
Total length: 180mm.
Weight: 115g.
Sheath: kydex
Packaging: cardboard box with Viper logos
Notes: Design by Fabrizio Silvestrelli

The Viper Handy is an innovative and compact fixed knife designed to provide an optimal user experience through the use of advanced manufacturing technologies and high-quality materials. Designed by master knife maker Fabrizio Silvestrelli.

The Viper Handy, with its CPM MagnaCut steel fixed blade, offers high strength and exceptional durability. The stonewashed finish adds a touch of elegance and practicality, reducing the visibility of scratches during use. The 3D-machined, natural canvas micarta handle fits perfectly in the hand, providing a secure and precise grip.

The handle's tang, tapered toward the back, promotes optimal balance of the knife, reducing fatigue during prolonged use. This makes the Viper Handy ideal for outdoor and hunting activities, as well as tactical operations where precision and endurance are essential.

Intended Use: Outdoor & Hunting

Production type: Industrial
Country of Production: Italy
Blade: Full Tang stainless steel CMP MagnaCut
Blade Finish: Stonewashed
Handle: Canvas Micarta
Blade Length: 82mm.
Blade thickness: 4mm.
Total length: 180mm.
Weight: 115g.
Sheath: kydex
Packaging: cardboard box with Viper logos
Notes: Design by Fabrizio Silvestrelli

Tuscan is a multi-role knife dedicated to Tuscany, a region known for its landscapes, cities of art and strategic military relevance. This knife is designed to adapt to different operational contexts, from tactical military theaters to urban operations, due to its versatility and maneuverability. The full tang blade made of BOHLER N690 steel (58 HRC) is lightened and balanced to facilitate chopping and batoning operations, while the sharpness remains uniform along the entire length. The ergonomic G10 handle allows comfortable use with both standard and reverse grip, with or without gloves. Ambidextrous Cordura sheath with M.O.L.L.E system and thigh strap allows easy carrying on tactical vests and belts. Tuscan is ideal for use in outdoor, survival and bushcraft environments, confirming its versatility in multiple operational situations.

Intended Use: Tactical/Military

Production type: Industrial
Country of production: Italy
Blade: full tang, in Bohler N690Co stainless steel at 58HRC
Blade treatment: Burnishing MIL-C-13924
Handle: G10
Blade length: 167mm.
Blade thickness: 6mm.
Total length: 306mm.
Weight: 437.5g.
Sheath: cordura, belt-mounted, MOLLE compatible
Packaging: cardboard box with Extrema Ratio logos.

Tuscan is a multi-role knife dedicated to Tuscany, a region known for its landscapes, cities of art and strategic military relevance. This knife is designed to adapt to different operational contexts, from tactical military theaters to urban operations, due to its versatility and maneuverability. The full tang blade made of BOHLER N690 steel (58 HRC) is lightened and balanced to facilitate chopping and batoning operations, while the sharpness remains uniform along the entire length. The ergonomic G10 handle allows comfortable use with both standard and reverse grip, with or without gloves. Ambidextrous Cordura sheath with M.O.L.L.E system and thigh strap allows easy carrying on tactical vests and belts. Tuscan is ideal for use in outdoor, survival and bushcraft environments, confirming its versatility in multiple operational situations.

Intended Use: Tactical/Military

Production type: Industrial
Country of production: Italy
Blade: full tang, in Bohler N690Co stainless steel at 58HRC
Blade treatment: Satin finish
Handle: G10
Blade length: 167mm.
Blade thickness: 6mm.
Total length: 306mm.
Weight: 437.5g.
Sheath: cordura, belt-mounted, MOLLE compatible
Packaging: cardboard box with Extrema Ratio logos.

Compact version of the CONTACT, the CONTACT C has a spearhead blade, in Böhler N690 steel with a hardness of 58 HRC, flat edge, lower guard branch and full-length lightening release.

The Forprene handle with locking by threaded tang makes the knife solid and well balanced.

The MOLLE compatible sheath is made of shockproof nylon with a system that avoids shaking noises, is equipped with a two-button safety flap, a thigh with anti-rotation rubber reinforcement and a reversible ambidextrous 2nd level retention system: the simple pressure on the trigger unlocks the blade.

Intended use: Tactical / Backup

Type of production: Industrial
Country of production: Italy
Blade: in N690Co 58HRC stainless steel
Blade treatment: Stonewashed
Handle: Forprene
Blade length: 128mm.
Blade thickness: 6.3mm.
Total length: 258mm.
Weight: 373g.
Sheath: Nylon
Packaging: Cardboard box with Extrema Ratio logos
Note: -

Intended Use: Tactical/Military

Production type: Industrial
Country of Production: USA
Blade: Steel CPM-MagnaCut
Blade finish: Stonewashed
Handle: Titanium and Micarta
Blade length: 90mm.
Blade thickness: 4mm.
Length closed: 113mm.
Total length: 206mm.
Thickness when closed: 12mm.
Weight: 129g.
Closure: Frame Lock
Clip: Removable, Multiposition, stainless steel
Packaging: cardboard box with Zero Tolerance logos
Notes: Design by Rick Hinderer - KVT ball bearing opening system

The Black Caiman is a tactical knife that Extrema Ratio, the official supplier of the Comsubin, developed and delivered to the G.O.I. (Gruppo Operativo Incursori) of the Italian Navy. Its name evokes and pays homage to the heroic Black Caimans of the Piave, a department of Royal Navy Arditi and other components on a volunteer basis, who during World War I swam across the Piave River to carry out raids into enemy territory.

The titanium clip can be positioned at three different angles on either side to allow for maximum customization of the port. Its shape is designed to minimize the bulk of the grip outside the pocket.

Among its features, in addition to the carbide glass breaker, is a safety, which when engaged, preserves against a dangerous accidental closing of the blade.

Intended use: tactical/military

Type of production: industrial
Country of manufacture: Italy
Blade: stainless steel N690Co 58HRC
Blade Finish: Burnished
Handle: Anticorodal aluminum alloy
Blade length: 93mm.
Blade thickness: 4mm.
Length closed: 140mm.
Total length: 231mm.
Weight: 180g.
Closure: Liner Lock
Clip: titanium deep pocket type; reversible, removable and tilting
Notes: additional safety catch that can be used when knife is open

The Black Caiman is a tactical knife that Extrema Ratio, the official supplier of the Comsubin, developed and delivered to the G.O.I. (Gruppo Operativo Incursori) of the Italian Navy. Its name evokes and pays homage to the heroic Black Caimans of the Piave, a department of Royal Navy Arditi and other components on a volunteer basis, who during World War I swam across the Piave River to carry out raids into enemy territory.

The titanium clip can be positioned at three different angles on either side to allow for maximum customization of the port. Its shape is designed to minimize the bulk of the grip outside the pocket.

Among its features, in addition to the carbide glass breaker, is a safety, which when engaged, preserves against a dangerous accidental closing of the blade.

Intended use: tactical/military

Type of production: industrial
Country of manufacture: Italy
Blade: stainless steel N690Co 58HRC
Blade Finish: Burnished
Handle: Anticorodal aluminum alloy
Blade length: 93mm.
Blade thickness: 4mm.
Length closed: 140mm.
Total length: 231mm.
Weight: 180g.
Closure: Liner Lock
Clip: titanium deep pocket type; reversible, removable and tilting
Notes: additional safety catch that can be used when knife is open

TACTICAL CUTLERY ENTERS THE KITCHEN!
Silver Talon is the knife designed by Extrema Ratio to celebrate the famous "Fiorentina" steak. This knife made of machined steel from solid, thanks to its integral structure, does not allow deposits of organic material.

The special claw shape of the blade allows it to cut dishes without the blade ever touching the plate with the edge but rather with the tip. Silver Talon, when used correctly, will retain its original sharpness for a very long time. For those who love precision tools even on the table.

Intended use: steak knife/table knife

Type of production: Industrial
Country of manufacture: Italy
Blade: stainless steel N690Co hardened to 58HRC
Blade Finish: Satin
Handle: /
Blade Length: 86mm.
Blade thickness: 2.5mm. on the blade / 6.5mm on the handle
Total length: 193m.
Weight: 85g.
Sheath: -
Packaging: Cardboard box with Extrema Ratio logos.
Notes: -

COL MOSCHIN Paper Knife is a taglicarte whose outline is faithfully derived from one of the most iconic knives of our production, the Col Moschin model, adopted by the 9th Parachute Assault Regiment "Col Moschin."

This instrument is part of a larger collection.

COL MOSCHIN Paper Knife is not only a decorative and evocative accessory, but it also has all the tactical features that are part of Extrema Ratio's DNA.

It features nylon grips and a sturdy steel blade that echoes the same shape as its big brother.

COL MOSCHIN Paper Knife is very practical and convenient for the office or home office and is also perfectly suited as an original gift idea.

Intended Use: Collection/Tactical/Military

Country of manufacture: Italy
Blade: stainless steel NOT SHARPENED
Blade Finish: Burnishing MIL-C-13924
Handle: nylon
Blade length: 100mm.
Blade thickness: 1.5mm.
Total length: 180mm.
Weight: 45g.
Sheath: -
Packaging: cardboard box with Extrema Ratio logos.
Notes: -

In designing the Belone, Danish Jesper Voxnaes started from typical lines of the Italian regional tradition, perfectly reworked according to his modern, minimalist style that has made him famous worldwide. The result is a light, tapered folding knife embellished with refined details, such as the holes in the back of the handle.
The Böhler M390 Microclean steel gives the Belone excellent cutting qualities, and the ball bearings make it the fastest flipper opening, perfectly integrated into the overall design. The carefully crafted ergonomically designed handle has an anodized titanium frame enclosed between thin carbon fiber folders. The Belone's clip is attached to the spacer so that the knife disappears completely into the pocket, maintaining maximum discretion.

Intended Use: Sporting / EDC

Production type: Industrial
Country of manufacture: Italy
Blade: Stainless steel M390 60-61HRC
Blade Treatment: Satin finish
Handle: Stonewashed titanium and forged carbon fiber "Dark Matter" in blue color
Blade length: 85mm.
Blade thickness: 3.4mm.
Length closed: 114mm.
Total length: 200mm.
Thickness when closed:11.3mm.
Weight: 78g.
Closure: Frame Lock
Clip: anodized titanium
Packaging: cardboard box with Viper logos
Notes: Design by Jesper Voxnaes

The kiridashi is a traditional Japanese cutting tool that has ancient roots in culture and tradition; Extrema Ratio has revised according to its style this knife belonging to Japanese tradition giving it a more tactical look than the original. While retaining the characteristic chisel rounding, KIRI has a special tip designed to achieve a high penetration efficiency. 

Extrema Ratio KIRI is available in Dark Stone and Satin finishes, both made of Böhler N690 steel hardened to 58HRC. The handle consists of two black-colored anodized anticorodal aluminum grips. The preshaped Kydex sheath is equipped with metal eyelets that allow paracord lanyard to be attached to MOLLE system platforms as well.

Intended use: Neck knife / Utility

Type of production: industrial
Country of production: Italy
Blade: stainless steel N690Co 58/60HRC
Blade treatment: Dark Stone Washed
Handle: stainless steel N690Co 58/60HRC
Blade length: 60mm.
Blade thickness: 5mm.
Total length: 190mm.
Weight: 112g.
Sheath: in Kydex, for neck
Packaging: cardboard box with Extrema Ratio logos
Notes: possibility of using the scabbard with Ulti-Clip, M.O.L.L.E. or Tek-Lok systems (may be purchased separately)

The kiridashi is a traditional Japanese cutting tool that has ancient roots in culture and tradition; Extrema Ratio has revised according to its style this knife belonging to Japanese tradition giving it a more tactical look than the original. While maintaining the characteristic chisel rounding, KIRI has a special tip designed to achieve a high penetration efficiency. 

Extrema Ratio KIRI is available in Dark Stone and Satin finishes, both made of Böhler N690 steel hardened to 58HRC. The handle consists of two black-colored anodized anticorodal aluminum grips. The preshaped Kydex sheath is equipped with metal eyelets that allow paracord lanyard to be attached to MOLLE system platforms as well.

Intended use: Neck knife / Utility

Type of production: industrial
Country of production: Italy
Blade: stainless steel N690Co 58/60HRC
Blade treatment: satin finish
Handle: stainless steel N690Co 58/60HRC
Blade length: 60mm.
Blade thickness: 5mm.
Total length: 190mm.
Weight: 112g.
Sheath: in Kydex, for neck
Packaging: cardboard box with Extrema Ratio logos
Notes: possibility of using the scabbard with Ulti-Clip, M.O.L.L.E. or Tek-Lok systems (may be purchased separately)

Designed by master designer Fabrizio Silvestrelli, Moon is Viper's first knife to adopt the hardened "button lock," a locking mechanism that is activated by a button on the handle. This type of lock provides a secure and reliable lock for the blade. 

A state-of-the-art steel such as MagnaCut was chosen for the blade: a high-strength steel known for its hardness and edge retention capacity. Thanks to these properties, the blade is able to tackle a variety of tasks without any problems. 

The handle has an ergonomic and comfortable grip. The 3D finish gives the handle a unique look and provides a secure grip during use. The handle is precisely designed to fit the shape of the hand, ensuring optimal control of the knife.

Intended Use: Sporting

Production type: Industrial
Country of manufacture: Italy
Blade: CPM MagnaCut 61/62HRC steel
Blade Finish: Stonewashed
Handle: Natural Canvas Micarta, double 420 stainless steel liner with GR2 titanium spacer and 303/305 stainless steel hardware
Blade length: 87mm (75mm. cutting edge).
Blade thickness: 4mm.
Length closed: 115mm.
Total length: 200mm.
Thickness when closed:18mm.
Weight: 140g.
Closure: Button Lock
Clip: titanium
Packaging: cardboard box with Viper logos
Notes: Design by Fabrizio Silvestrelli

Designed by master knife maker Fabrizio Silvestrelli, Moon is Viper's first knife to adopt the hardened "button lock."

The handle uses the brand new UltreX SureTouch composite in modified G-10.

SureTouch is a revolutionary new patent-pending process that combines layers of G-10 with rubber. Now you can have the strength and durability of G-10 with the grip and non-slip properties of rubber, all in one material. 

The combination of G-10 and rubber offers one of the most revolutionary advantages on the market. Because G10 is commonly processed for the knife and gun industry, this new material allows for greater ease of use. SureTouch allows for improved grip and comfort.

Intended Use: Sporting

Type of production: Industrial
Country of Production: Italy
Blade: CPM MagnaCut 61/62HRC steel
Blade finish: Stonewashed
Handle: UltreX SureTouch (modified G10 with rubberized, non-slip exterior) with double 420 stainless steel liner with GR2 titanium spacer and 303/305 stainless steel hardware
Blade length: 87mm (cutting edge of 75mm.)
Blade thickness: 4mm.
Length closed: 115mm.
Total length: 200mm.
Thickness when closed:18mm.
Weight: 140g.
Closure: Button Lock
Clip: titanium
Packaging: cardboard box with Viper logos
Notes: Design by Fabrizio Silvestrelli

The Ant is the most compact among Extrema Ratio's folding knives. Despite its small size, this model features an extremely sturdy, durable, and reliable structure.

The Ant Rescue, unlike other versions, has a cheek piece in red coloration that allows the operator to more easily locate the knife in case of a fall. This version is equipped with a specific serration that allows cutting ropes and even high-tensile aramid materials. Moreover, this model has a tapered tang that serves as an emergency screwdriver. The Ant Rescue has been developed according to the needs expressed by the "Italian Army Alpine Troops School".

The handle is made of two different elements: the cheek piece crafted from anodized anticorodal aluminum and the hardened steel frame which also serves as the blade lock (Frame Lock System). This mechanism involves a part of the frame bending inward to firmly secure the blade in the open position, enhancing the user's safety during the knife's use.

The tang features a hole for the insertion of a lanyard, and on the right side of the handle, there is a steel clip that allows for concealed carry in the pocket.

The Ant is available in 4 versions with two different types of steel, both provided by Böhler, an Austrian company with which Extrema Ratio has been collaborating for over 20 years, using its highly esteemed materials for the production of its blades.

For the Stone Washed M390 version, Extrema Ratio uses Böhler M390 steel, thermally treated to 61 HRC, which, thanks to a powder metallurgy production process, ensures cutting effectiveness, wear resistance, and oxidation resistance over time.

The blade is sheep foot-shaped and has a small hole on the top part to facilitate opening. Its particular structure, with a straight edge, allows the user to comfortably rest their fingers on the back of the knife and use it with ease.

Type of production: industrial
Blade: in partially serrated stainless steel M390 61HRC
Blade production: Italy
Handle: anodized anticorodal aluminum and steel
Blade length: 70mm.
Blade thickness: 2.2mm.
Closed length: 55mm.
Total length: 127mm.
Balancing: -
Weight: 42g.
Closure: Frame Lock
Clip: removable stainless steel
Sheath: -
Notes:

The Ant is the most compact among Extrema Ratio's folding knives. Despite its small size, this model features an extremely sturdy, durable, and reliable structure.

The handle is made of two different elements: the cheek piece crafted from anodized anticorodal aluminum and the hardened steel frame which also serves as the blade lock (Frame Lock System). This mechanism involves a part of the frame bending inward to firmly secure the blade in the open position, enhancing the user's safety during the knife's use.

The tang features a hole for the insertion of a lanyard, and on the right side of the handle, there is a steel clip that allows for concealed carry in the pocket.

The Ant is available in 4 versions with two different types of steel, both provided by Böhler, an Austrian company with which Extrema Ratio has been collaborating for over 20 years, using its highly esteemed materials for the production of its blades.

For the Stone Washed M390 version, Extrema Ratio uses Böhler M390 steel, thermally treated to 61 HRC, which, thanks to a powder metallurgy production process, ensures cutting effectiveness, wear resistance, and oxidation resistance over time.

The blade is sheep foot-shaped and has a small hole on the top part to facilitate opening. Its particular structure, with a straight edge, allows the user to comfortably rest their fingers on the back of the knife and use it with ease.

Type of production: industrial
Blade: in stainless steel M390 61HRC
Blade production: Italy
Handle: anodized anticorodal aluminum and steel
Blade length: 70mm.
Blade thickness: 2.2mm.
Closed length: 55mm.
Total length: 127mm.
Balancing: -
Weight: 42g.
Closure: Frame Lock
Clip: removable stainless steel
Sheath: -
Notes:

Type: Previously Purchased
Condition: in excellent condition
Available in the market, currently in production
Sharpening: Factory standard
Blade marks: None
Handle marks: None
Box: Present
Sheath: Not applicable
Manuals, Certificates, and Warranties: ER
Checked and Certified by our internal laboratory
Intended use: Tactical/Emergency

Type of production: Industrial
Blade Production: Italy
Blade: N690Co stainless steel, 58HRC
Blade Treatment: Testudo
Handle: Anticorodal
Blade length: 95mm
Blade thickness: 4mm
Closed length: 134mm
Total length: 225mm
Closed thickness: 24mm
Balance: Not applicable
Weight: 162g
Closure: Liner Lock
Clip: Stainless Steel
Sheath: Not applicable
Packaging: black cardboard box with Extrema Ratio logos
Notes: seat belt cutter, glass breaker, screwdriver for optics

As an elegant and refined alternative to the original 0450, Zero Tolerance presents the 0450BLUCF model with that extra touch.

The CPM MagnaCut blade steel represents exceptional toughness, wear resistance, and unparalleled edge retention.

The classic stonewash finish of the blade with ball bearings highlights the robust side of the Frame Lock Folder and complements the blue marbled carbon front handles and the titanium handle area on the back.

With a reversible clip for pocket carry and a lanyard hole. Made in the USA.

Intended use: EDC/Sport/Collection

Production type: Industrial
Blade production: USA
Blade: CPM Magnacut steel
Blade treatment: Stone Wash
Handle: Carbon Fiber and Titanium
Blade length: 82mm
Blade thickness: 3mm
Closed length: 111mm
Overall length: 187mm
Weight: 68g
Locking mechanism: Frame Lock
Clip: Removable, multiposition, stainless steel
Packaging: Cardboard box with Zero Tolerance logos
Notes: Design by Dmitry Sinkevich - KVT opening on ball bearings

Intended Use: Tactical / Sporting

Production type: Industrial
Country of Production: USA
Blade: full tang in carbon steel CPM-3V
Blade treatment: Black Cerakote
Handle: G10 Black with stainless steel through-guard
Blade length: 152mm.
Blade thickness: 4.8mm.
Total length: 272mm.
Handle thickness: 17.8mm.
Weight: 292g.
Sheath: kydex, with Nylon belt attachment system, removable
Packaging: cardboard box with Zero Tolerance logos
Notes: limited edition Sprint Run edition (not numbered) designed for the international market only

Thanks to its structure, RAO C is a tool that despite its small size, manages to guarantee the same qualities of robustness and reliability as its big brother while offering better portability and manageability.

The locking mechanism on opening is particularly strong as it is assisted by a safety system that turns it into a true fixed blade. The primary safety on the blade is activated by raising and lowering the locking pin. To provide the user with maximum safety in use, a practical and quick secondary safety has been applied, which can be activated simply by moving the locking pin horizontally.

For the purpose of lightening the steel frames, a template was laser-cut from the profile of the RAO C, which was then used to make a gadget that is delivered with the knife.


Intended use: hiking/tactical

Type of production: industrial
Country of production: Italy
Blade: stainless steel N690Co 58HRC
Blade Finish: Burnishing MIL-C-13924
Handle: anticorodal anodized with hard oxidation
Blade length: 100mm.
Blade thickness: 4mm.
Length closed: 132mm.
Total length: 225mm.
Weight: 239g.
Closure: modified front lock, with push-button aditional safety.
Notes: keychain gadget, with miniature profile of the knife

Intended use: Light Utility/Hunting

Type of production: Industrial
Blade Production: Italy
Blade: Full Tang in N690Co stainless steel
Blade Treatment: Stonewash
Handle: Brown Micarta
Blade Length: 115mm.
Blade Thickness: 5mm.
Closed Length: -
Total Length: 250mm.
Thickness when closed: -
Balance: set back by 3cm
Weight: 245g.
Closure: -
Clip: -
Sheath: brown leather
Packaging: cardboard box with Viper logos
Notes: Design by Fabrizio Silvestrelli

Precious Mother-of-Pearl Collection consisting of 3 knives: TWIN, KEY, HUG with titanium handle and mother-of-pearl insert. Rounded spring with handmade file work. Accompanied by individual leather liners.

Limited and numbered series of 200 sets with cylindrical wooden and plexiglass display stand.

HUG DATA SHEET
Type of production: Industrial, with handmade lima spring
Country of production: Italy
Blade: Bohler M390 Microclean stainless steel, HRC 59/61
Blade treatment: Satin finish
Handle: Titanium GR5 and Mother of Pearl
Blade length: 71mm.
Blade thickness: 3mm.
Length closed: 112mm.
Total length: 184mm.
Thickness when closed: 14mm.
Weight: 75g.
Closure: Slipjoint
Clip: titanium
Notes: Design by Sacha Thiel

KEY DATA SHEET
Type of production: Industrial, with handcrafted file spring
Country of Production: Italy
Blade: Bohler M390 Microclean stainless steel, HRC 59/61
Blade treatment: Satin finish
Handle: Titanium GR5 and Mother of Pearl
Blade length: 76mm.
Blade thickness: 3mm.
Length closed: 115mm.
Total length: 185mm.
Thickness when closed:10.5mm.
Weight: 75g.
Closure: SlipJoint
Clip: -
Notes: Design by Jesper Voxnaes

TWIN DATA SHEET
Type of production: Industrial, with handmade file spring
Country of Production: Italy
Blade: Bohler M390 Microclean stainless steel, HRC 59/61
Blade treatment: Satin finish
Handle: Titanium GR5 and Mother of Pearl
Blade length: 77mm.
Blade thickness: 3mm.
Length closed: 112mm.
Total length: 176mm.
Thickness when closed: 10mm.
Weight: 77g.
Closure: Slipjoint
Clip: -
Notes: Design by Fabrizio Silvestrelli

Ferrum T is a folding knife with a clear tactical connotation equipped with a spear point blade with lightening slot. It has a slim and compact shape, the two anodized anticorodal aluminum grips make up a light, slender and at the same time very resistant handle. It can be housed in a breast pocket, in small flashlight holsters or inside a single loop of the M.O.L.L.E. system.

Equipped with a flipper assisted opening system, the blade rotates on ball bearings which allow a smooth and uncertain movement of the blade. This mechanism allows the user to open the blade quickly and easily, even with just one hand. The locking system adopted is the well-tested liner lock. The reversible clip is positioned on the back.

Ferrum T is available in 2 versions: the first, FERRUM T Black Warfare, equipped with a black handle and Geotech Camo blade, the innovative and original Extrema Ratio camouflage pattern, created by laser engraving. The second, FERRUM T TACTICAL MUD, with anodized handle in the new gray-green color and blade with MIL-C-13924 bluing.

The reversible clip is positioned on the back.

Intended use: Tactical / EDC

Type of production: Industrial
Country of production: Italy
Blade: N690Co 58HRC stainless steel
Blade Finish: Black
Handle: Rough Anticorodal
Blade length: 73mm.
Blade thickness: 3mm.
Closed length: 90mm.
Total length: 184mm.
Weight: 86g.
Closure: Liner Lock
Clip: Removable and reversible, in stainless steel
Packaging: Cardboard box with Extrema Ratio logos
Note: -

Ferrum T is a folding knife with a clear tactical connotation equipped with a spear point blade with lightening slot. It has a slim and compact shape, the two anodized anticorodal aluminum grips make up a light, slender and at the same time very resistant handle. It can be housed in a breast pocket, in small flashlight holsters or inside a single loop of the M.O.L.L.E. system.

Equipped with a flipper assisted opening system, the blade rotates on ball bearings which allow a smooth and uncertain movement of the blade. This mechanism allows the user to open the blade quickly and easily, even with just one hand. The locking system adopted is the well-tested liner lock. The reversible clip is positioned on the back.

Ferrum T is available in 2 versions: the first, FERRUM T Black Warfare, equipped with a black handle and Geotech Camo blade, the innovative and original Extrema Ratio camouflage pattern, created by laser engraving. The second, FERRUM T TACTICAL MUD, with anodized handle in the new gray-green color and blade with MIL-C-13924 bluing.

The reversible clip is positioned on the back.

Intended use: Tactical / EDC

Type of production: Industrial
Country of production: Italy
Blade: N690Co 58HRC stainless steel
Blade Finish: Black
Handle: Rough Anticorodal
Blade length: 73mm.
Blade thickness: 3mm.
Closed length: 90mm.
Total length: 184mm.
Weight: 86g.
Closure: Liner Lock
Clip: Removable and reversible, in stainless steel
Packaging: Cardboard box with Extrema Ratio logos
Note: -

Ferrum Rescue is a tool designed for rescue operations, developed in collaboration with my friend Andrea Micheli, military and law enforcement expert, journalist and shooting instructor. Made with a very compact handle, this rescue tool is equipped with 3 blades, each of which has a specific function:

The first and main blade has a thickness of 3 millimeters and is designed to be used for more demanding purposes and to protect the cutting edge of the other two from premature wear. The teeth allow it to cut larger ropes or textile materials, the remaining smooth part has the classic function of a knife. The second blade is a scalpel, which can be used for extremely precise cuts and for emergency first aid interventions. The third blade, on the back of the first, is the smallest of the 3, it has the function of cutting lines, capable of cutting paracord and aramid material.

The interaction of the main blade with the scalpel allows the operator to make a quick emergency cut to free any injured person from his or her clothing.

The line cutter blade and the scalpel are both interchangeable.

Ferrum Rescue has a slim and compact shape, the two anodized anticorodal aluminum grips make up a light, slender and at the same time very resistant handle. It can be housed in a breast pocket, in small flashlight holsters or inside a single loop of the M.O.L.L.E. system. On the back there is also a hard metal glass breaker.

Equipped with a flipper assisted opening system, the blade rotates on ball bearings which allow a smooth and uncertain movement of the blade. This mechanism allows the operator to open the blade quickly and easily, even with just one hand. The locking system adopted is the well-tested liner lock. The reversible clip is positioned on the back.

The reversible clip is positioned on the back.

Intended use: Tactical / EDC

Type of production: Industrial
Country of production: Italy
Blade: N690Co 58HRC stainless steel
Blade finish: Satin
Handle: Rough Anticorodal
Blade length: 56mm.
Blade thickness: 3mm.
Closed length: 90mm.
Total length: 170mm. (18mm. INCLUDING SCALPEL BLADE)
Weight: 85g.
Closure: Liner Lock
Clip: Removable and reversible, in stainless steel
Packaging: Cardboard box with Extrema Ratio logos
Note: -

Ferrum Rescue is a tool designed for rescue operations, developed in collaboration with my friend Andrea Micheli, military and law enforcement expert, journalist and shooting instructor. Made with a very compact handle, this rescue tool is equipped with 3 blades, each of which has a specific function:

The first and main blade has a thickness of 3 millimeters and is designed to be used for more demanding purposes and to protect the cutting edge of the other two from premature wear. The teeth allow it to cut larger ropes or textile materials, the remaining smooth part has the classic function of a knife. The second blade is a scalpel, which can be used for extremely precise cuts and for emergency first aid interventions. The third blade, on the back of the first, is the smallest of the 3, it has the function of cutting lines, capable of cutting paracord and aramid material.

The interaction of the main blade with the scalpel allows the operator to make a quick emergency cut to free any injured person from his or her clothing.

The line cutter blade and the scalpel are both interchangeable.

Ferrum Rescue has a slim and compact shape, the two anodized anticorodal aluminum grips make up a light, slender and at the same time very resistant handle. It can be housed in a breast pocket, in small flashlight holsters or inside a single loop of the M.O.L.L.E. system. On the back there is also a hard metal glass breaker.

Equipped with a flipper assisted opening system, the blade rotates on ball bearings which allow a smooth and uncertain movement of the blade. This mechanism allows the operator to open the blade quickly and easily, even with just one hand. The locking system adopted is the well-tested liner lock. The reversible clip is positioned on the back.

The reversible clip is positioned on the back.

Intended use: Tactical / EDC

Type of production: Industrial
Country of production: Italy
Blade: N690Co 58HRC stainless steel
Blade finish: Satin
Handle: Rough Anticorodal
Blade length: 56mm.
Blade thickness: 3mm.
Closed length: 90mm.
Total length: 170mm. (18mm. INCLUDING SCALPEL BLADE)
Weight: 85g.
Closure: Liner Lock
Clip: Removable and reversible, in stainless steel
Packaging: Cardboard box with Extrema Ratio logos
Note: -

Ferrum E is a simple, essential and functional EDC (Every Day Carry) folding knife. Equipped with a drop blade, it has a slim and compact shape, the two anodised anticorodal aluminium sheaths make up a light, slender and at the same time very durable handle. It can be housed in a breast pocket, in small torch holsters or inside a single M.O.L.E. loop.

Equipped with a flipper-assisted opening system, the blade rotates on ball bearings that allow for smooth and uncertainty-free blade movement. This mechanism allows the operator to open the blade quickly and easily, even with one hand. The locking system adopted is the tried and tested liner lock.

The reversible clip is positioned at the rear.

Intended use: Tactical / EDC

Production type: Industrial
Country of Production: Italy
Blade: Stainless steel N690Co 58HRC
Blade finish: Satin
Handle: Rough Anticorodal
Blade length: 75mm.
Blade thickness: 3mm.
Length closed: 90mm.
Total length: 186mm.
Weight: 87g.
Closure: Liner Lock
Clip: Removable and reversible, stainless steel
Packaging: Cardboard box with Extrema Ratio logos
Notes: -

Intended Use: Tactical / EDC

Production type: Industrial
Country of Production: Italy
Blade: stainless steel N690Co 58HRC
Blade Finish: Burnishing MIL-C-13924
Handle: Rough Anticorodal
Blade Length: 70mm.
Blade thickness: 3mm.
Length closed: 99mm.
Total length: 168mm.
Weight: 85g.
Closure: Liner Lock
Clip: Removable and reversible, stainless steel
Packaging: Cardboard box with Extrema Ratio logos
Notes: -

Intended use: Gentleman/EDC

Type of production: Industrial
Blade production: Italy
Blade: CPM MagnaCut steel
Blade Treatment: Stonewashed
Handle: Purple Dark Carbon Fiber
Blade length: 68mm.
Blade thickness: 4mm.
Closed length: 111mm.
Total length: 184mm.
Closed thickness: 15mm.
Balancing: -
Weight: 105g.
Closure: Liner Lock
Clip: in anodized titanium
Scabbard: -
Packaging: cardboard box with Viper logos
Notes: Design by Jesper Voxnaes

Intended use: Gentleman/EDC

Type of production: Industrial
Blade production: Italy
Blade: CPM MagnaCut steel
Blade Treatment: Stonewashed
Handle: Micarta
Blade length: 68mm.
Blade thickness: 4mm.
Closed length: 111mm.
Total length: 184mm.
Closed thickness: 15mm.
Balancing: -
Weight: 105g.
Closure: Liner Lock
Clip: in anodized titanium
Scabbard: -
Packaging: cardboard box with Viper logos
Notes: Design by Jesper Voxnaes

COL MOSCHIN Paper Knife is a paper knife whose shape is faithfully derived from one of the most iconic knives of our production, the Col Moschin model, adopted by the 9th Parachute Assault Regiment "Col Moschin".

This tool is part of a larger collection.

COL MOSCHIN Paper Knife is not only a decorative and evocative accessory, but also has all the tactical characteristics that are typical of Extrema Ratio's DNA.

It is equipped with nylon grips and a sturdy steel blade that takes up the same shape as its older brother.

COL MOSCHIN Paper Knife is very practical and convenient for the office or home studio and is also perfect as an original gift idea.

Intended use: Collection/Tactical/Military

Country of production: Italy
Blade: NOT SHARP stainless steel
Blade Finish: MIL-C-13924 Bluing
Handle: nylon
Blade length: 100mm.
Blade thickness: 1.5mm.
Total length: 180mm.
Weight: 45g.
Scabbard: -
Packaging: Cardboard box with Extrema Ratio logos with hand-polished plexiglass base in BLACK color with engraved Extrema Ratio logo
Note:

This line of knives fits between the Basic Folders series and the Heavy Folders series. The typical mechanism of the series is the LINER-LOCK. The overall structure is robust. All knives in the MF series have a rear glass breaker. They also feature the innovation of the adjusting locknut on the blade fixing pivot.

By removing the locknut it is possible to tighten or loosen the central pivot as desired, to achieve the desired opening fluidity. It will be enough to lock the pivot screw with the locknut to fix the adjustment. The hemispherical milling on the handles facilitate the change of grip from "saber grip" to "reverse grip". The clip is reversible.

The BC (Belt Cutter) version features a rear seatbelt cutter with an easily obtainable and replaceable industrial cutter blade. In addition, a slotted screwdriver is inserted inside the handle that allows for the adjustment and calibration of firearm optics. This version is produced with a rough grip to offer a better grip.

Intended use: Tactical

Type of production: Industrial
Blade production: Italy
Blade: Stainless steel N690Co 58HRC
Blade treatment: Testudo
Handle: Anticorodal
Blade length: 95mm.
Blade thickness: 4mm.
Closed length: 134mm.
Total length: 225mm.
Thickness when closed: 24mm.
Balance: -
Weight: 165g.
Closure: Liner Lock
Clip: Stainless Steel
Sheath: -
Packaging: Black cardboard box with Extrema Ratio logos
Notes: -

Intended use: hiking / Survivalism

Type of production: industrial
Country of manufacture: Italy
Blade: stainless steel N690Co 58HRC
Blade treatment: Dark Stone
Handle: anticorodal of 4.5mm
Blade length: 115mm.
Blade thickness: 6.3mm.
Length closed: 142
Total length: 262mm.
Weight: 330g.
Closure: modified front lock - threaded safety pin
Sheath: tactical Nylon with M.O.L.L.E. attachments suitable for both closed and open knife
Notes: diamond sharpener and fire starter included

Intended Use: Tactical / Sporting

Type of production: Industrial
Country of manufacture: USA
Blade: full tang in CPM-3V carbon steel
Blade treatment: Microbead blasting and Cerakote protective treatment
Handle: G10 OD Green with stainless steel through-guard
Blade length: 152mm.
Blade thickness: 4.8mm.
Total length: 272mm.
Handle thickness: 17.8mm.
Weight: 292g.
Sheath: kydex, with Nylon belt attachment system, removable
Packaging: cardboard box with Zero Tolerance logos.
Notes: -

Extrema Ratio Misericordia Desert, which preserves intact all the features of the famous Misericordia model adopted by the 4th Alpine Parachute Regiment, derives from the commemorative dagger made on the occasion of the 140th anniversary of the 4th Alpine Regiment and the 70th since the founding of the Alpine Paratroopers.

It is a tactical-type fixed-blade knife designed for those instances when the knife must be extremely light and compact. The new desert coloring also makes this model available in a shade in line with the most common needs of modern operational departments.

The blade is milled from Böhler N690 steel, hardened to 58 HRC for the best balance of edge retention and strength, is 118 mm long, 4mm thick, and has a flat edge. The weight of the knife is just 87g. The profile is a spear point type, with a full-length shank that makes it even lighter and with a ¾-length false counterblade. The finish is a stone washed type.

The knife's polymer handle features classic Extrema Ratio shells that make for a more secure grip and is attached to the tang by a through-screw. On the rear end the handle flows connecting with a wide ring equipped with a "skull crusher" appendage: a ring that allows the use of martial arts techniques and ensures the hand a very solid grip. In this version the handle is in Desert coloring.

Since this is a knife designed for professional use, much attention has been paid to ease of carrying, accessibility and extraction in case of need. The knife is secured to the sheath by a quick-release safety that can be easily reversed for left-handed use. The sheath is also in Desert coloring, made of high-strength Nylon, very versatile and equipped with 2 adjustable loops that allow it to be attached to M.O.L.L.E systems, facilitating quick extraction in various tactical scenarios.




Intended Use: Tactical / Multirole

Production Type: Industrial
Country of Production: Italy
Blade: stainless steel N690Co hardened to 58HRC
Blade treatment: Stonewashed
Handle: FRN (fiberglass reinforced nylon)
Blade length: 118mm.
Blade thickness: 4mm.
Total length: 233mm.
Weight: 87g.
Sheath: Nylon with two multi-position clips, designed for M.O.L.L.E. type attachments.
Packaging: cardboard box with Extrema Ratio logos
Notes: Rear Skull Crasher - Derived from the Black model, adopted by the 4th Alpine Parachute Regiment.