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: -

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

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.

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.

Il BF2 è un chiudibile “full size” particolarmente indicato per l’impiego professionale da parte di operatori militari e di polizia sul campo. L’impugnatura è salda e confortevole; la clip, reversibile ed avvolgente, diventa un utile e comodo appoggio per il pollice in “reverse grip”. La guancetta è piena con i caratteristici piani ribassati per impegnare i “pin” d’apertura senza che sporgano dal profilo del coltello chiuso. La lama, disponibile in versione drop o tanto, ha l’arrotatura piatta e, come nel BF1, la punta particolarmente spessa e resistente. Il meccanismo di blocco della lama è il collaudato LINER-LOCK, coadiuvato da un meccanismo di sicura da azionare manualmente protetto da un carter. 

Destinazione d'uso: Tattico/Militare

Tipo di produzione: industriale
Lama: in acciaio inox N690Co 58HRC
Paese di produzione: Italia
Impugnatura: Anticorodal
Lunghezza lama: 90mm.
Spessore lama: 3mm.
Lunghezza chiuso: 124mm.
Lunghezza totale: 210mm.
Bilanciatura: -
Peso: 142g.
Chiusura: Liner Lock
Clip: reversibile ed amovibile in acciaio inox
Fodero: -
Note: Fermo di sicurezza a coltello aperto

Intended Use: Sporting / Backup

Production type: Industrial
Country of Production: Italy
Blade: Bohler N690Co stainless steel at 58HRC
Blade Finish: Satin finish
Handle: Forprene
Blade length: 104mm.
Blade thickness: 4mm.
Total length: 208mm.
Weight: 196g.
Sheath: Nylon
Packaging: Cardboard box with Extrema Ratio logos.

After the success of the FULCRUM multirole knife, the civil bayonet version NFG (No Fixing Gears, without rifle attachment) was born. Like the FULCRUM, the bayonet is an extremely robust and versatile knife, the blade withstands breaking loads exceeding 150 kg, the tip is very robust and the profile allows you to work for a long time with the knife without affecting the sharpness of the last section . The advanced center of gravity and the weight of the blade make it suitable for heavy field work.

Intended use: tactical / military / multirole

Blade: N690Co 58HRC stainless steel
Handle: removable, in Forprene
Blade length: 180mm.
Blade thickness: 6.3mm.
Closed Length: -
Total length: 310mm.
Balance: advanced, 1.5 cm from the lower guard branch
Weight: 330g.
Closing: -
Clip: -
Sheath: modular tactical, from thigh or belt, in Nylon and Kydex, with blade attachment system for cutting with wire cutters
Notes: diamond sharpener integrated in the sheath - civil version, without rifle couplings

The Herring dagger is one of the most loved military knives by enthusiasts.

Its original name is Fairbairn Sykes or Commando Dagger and it was present in the endowment of the British Commandos.

A dagger that entered Italian history in World War II, thanks to the exploits of young soldiers of the 1st "Folgore" Reconnaissance Squadron, who were equipped with this weapon during Operation Herring. He has behind him a heroic piece of history that is rarely talked about, despite the fact that these young boys, thanks to their devotion to the cause and their courage, have written an important page in Italian history.

Extrema Ratio wanted to pay homage to this dagger trying to remain faithful to the original forms, while using the most modern production techniques.

The very special hand-made finish of the handle simulates the aging of brass and gives the dagger a dated look, similar to the original.

The dagger was developed in collaboration with the 185th RAO and adopted as a ceremonial commemorative dagger for the 20th anniversary of the regiment's establishment and the 75th anniversary of the Herring mission.

The knife is equipped with a polymer case with historical frieze of the F Squadron, leather / kydex sheath with brass tip and two commemorative scrolls.

PLEASE NOTE:
NE version, simulacrum replica with rounded tip and blunt blade, to allow free sale and possession according to the current regulations in force on the Italian territory.

We warn that any subsequent modifications and sharpening made to the blade modify the status of simulacrum of the Herring NE. In this case it will be subject to the regulations in force in the respective countries. Furthermore, these changes will void the Extrema Ratio warranty.

Intended use: Collection / Tactical

Type of production: Industrial
Country of production: Italy
Blade: not sharp, in stainless steel N690Co 58HRC
Blade treatment: Burnishing MIL-C-13924
Handle: Aged brass
Blade length: 167mm.
Blade thickness: 6.3mm.
Total length: 289mm.
Weight: 276g.
Sheath: leather, ABS and brass sheath
Packaging: Polymer case with historical frieze of Squadron F and 2 commemorative scrolls
Note: -

The Giant Mamba has a "tanto" blade in 6.3 mm thick Böhler N690 steel with a hardness of 58 HRC, flat edge and full length lightening.

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 conical opening for rapid insertion and extraction and a system that avoids shaking noises, it is equipped with a two-button safety flap, a thigh with anti-rotation rubber reinforcement and a reversible ambidextrous safety : simply pressing the trigger unlocks the blade.

 
Intended use: Tactical / Multirole

Type of production: Industrial
Country of production: Italy
Blade: in N690Co 58HRC stainless steel
Blade treatment: Satin
Handle: Forprene
Blade length: 163mm.
Blade thickness: 6.3mm.
Total length: 293mm.
Weight: 289g.
Sheath: Nylon
Packaging: Cardboard box with Extrema Ratio logos
Note: -

The Giant Mamba has a "tanto" blade in 6.3 mm thick Böhler N690 steel with a hardness of 58 HRC, flat edge and full length lightening.

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 conical opening for rapid insertion and extraction and a system that avoids shaking noises, it is equipped with a two-button safety flap, a thigh with anti-rotation rubber reinforcement and a reversible ambidextrous safety : simply pressing the trigger unlocks the blade.

 
Intended use: Tactical / Multirole

Type of production: Industrial
Country of production: Italy
Blade: in N690Co 58HRC stainless steel
Blade treatment: Mil-C-13924 burnishing
Handle: Forprene
Blade length: 163mm.
Blade thickness: 6.3mm.
Total length: 293mm.
Weight: 289g.
Sheath: Nylon
Packaging: Cardboard box with Extrema Ratio logos
Note: -

After the success of the FULCRUM multi-role knife, the bayonet version was born. Like the FULCRUM, the bayonet is an extremely robust and versatile knife, the blade holds loads at break above 150 kg, the tip is very sturdy and the profile allows it to work for a long time with the knife without affecting the sharpening of the last section , which guarantees, together with the partial dorsal sharpening, to maintain the penetration capacity necessary for hand-to-hand combat against targets covered by heavy clothing, clothing and soft ballistic protections. The advanced center of gravity and the weight of the blade make it suitable for heavy field work. NFG version (No Fixing Gears, without rifle mount).

Intended use: tactical / military / multi-role

Blade: full tang in stainless steel N690Co 58HRC
Handle: removable in Forprene
Blade length: 180mm.
Blade thickness: 6.3mm.
Total length: 310mm.
Balancing: advanced, 1.5 cm from the lower guard branch
Weight: 378g.
Sheath: modular tactile with thread trimmer, thigh or belt, in Nylon and Kydex

Model: Lightened version of the classic Fulcrum Bayonet, with shearder, stone washed blade, desert handle and desert nylon sheath.

Intended use: tactical / military / multi-role

Blade: full tang in stainless steel N690Co 58HRC
Handle: dismountable in Forprene
Blade length: 180mm.
Blade thickness: 6.3mm.
Length closed: -
Total length: 310mm.
Balancing: advanced, 1.5 cm from the lower guard branch
Weight: 378g.
Closure: -
Clip: -
Sheath: modular tactical with shear, thigh or belt, in Nylon and Kydex
Note: -

A compact and compact multi-role knife with ABS fast release sheath with two multiposition clips and tight enough to be secured inside the passers-through of the M.O.L.L.E. - Available in four color variants: Black, Desert, Ranger Green and HCS (Hybrid Coyote Sage)

Intended use: tactical / multi role

Type of production: industrial
Country of production: Italy
Blade: N690Co stainless steel hardened to 58HRC
Blade Treatment: Satin
Handle: Forprene
Blade Length: 116mm.
Blade thickness: 4mm.
Total Length: 237mm.
Weight: 85g.
Sheath: in ABS with two multiposition clips, designed for type M.O.L.L.E.
Packing: Cardboard box with Extrema Ratio logos
Notes: -

A compact and compact multi-role knife with ABS fast release sheath with two multiposition clips and tight enough to be secured inside the passers-through of the M.O.L.L.E. - Available in four color variants: Black, Desert, Ranger Green and HCS (Hybrid Coyote Sage)

Intended use: tactical / multi role

Type of production: industrial
Country of production: Italy
Blade: N690Co stainless steel hardened to 58HRC
Blade Treatment: MIL-C-13924 PVD
Handle: Forprene
Blade Length: 116mm.
Blade thickness: 4mm.
Total Length: 237mm.
Weight: 85g.
Sheath: in ABS with two multiposition clips, designed for type M.O.L.L.E.
Packing: Cardboard box with Extrema Ratio logos
Notes: -

A compact and compact multi-role knife with ABS fast release sheath with two multiposition clips and tight enough to be secured inside the passers-through of the M.O.L.L.E. - Available in four color variants: Black, Desert, Ranger Green and HCS (Hybrid Coyote Sage)

Intended use: tactical / multi role

Type of production: industrial
Country of production: Italy
Blade: N690Co stainless steel hardened to 58HRC
Blade Treatment: Satin
Handle: Forprene
Blade Length: 116mm.
Blade thickness: 4mm.
Total Length: 237mm.
Weight: 85g.
Sheath: in ABS with two multiposition clips, designed for type M.O.L.L.E.
Packing: Cardboard box with Extrema Ratio logos
Notes: -

Target: Tactical / Military

Blade: Stainless Steel N690Co 58HRC
Handle: Kraton
Blade Length: 340mm.
Blade thickness: 6.3mm.
Blade Finishing: MIL-C-13924 Brushing
Total length: 493mm.
Balancing: advanced
Weight: 650g.
Sheath: Tactical, Nylon, Thigh

NK3 is a small knife that extends the family of the neck knives Extrema Ratio.

It differs from the models NK1 and NK2 for the largest size of the blade-type "long" 70mm. The ergonomic grip is designed so as to prevent accidental cuts during withdrawal from the scabbard.

On the back it is formed a drain for the positioning of the thumb or index depending on use. The structure enables both use for work or cutting very effective for small precision work.

The Kydex sheath is a quick release and is supplied to the port of paracord knife in his neck.

intended use: Neck Knife
type of production: Industrial
production country: Italy
Blade: stainless steel N690Co 58 / 60HRC
Blade treatment: Desert Warfare
manicatura: stainless steel N690Co 58 / 60HRC
blade length: 70mm.
blade thickness: 6.3mm.
total length: 172mm.
Weight: 95g.
Sheath: Kydex, neck
Package: Cardboard box with logos Extrema Ratio
Notes: possibility of using the sheath with MOLLE systems or Tek-Lok (not included in the package)

NK3 is a small knife that extends the family of the neck knives Extrema Ratio.

It differs from the models NK1 and NK2 for the largest size of the blade-type "long" 70mm. The ergonomic grip is designed so as to prevent accidental cuts during withdrawal from the scabbard.

On the back it is formed a drain for the positioning of the thumb or index depending on use. The structure enables both use for work or cutting very effective for small precision work.

The Kydex sheath is a quick release and is supplied to the port of paracord knife in his neck.

intended use: Neck Knife
type of production: Industrial
production country: Italy
Blade: stainless steel N690Co 58 / 60HRC
Blade treatment: Stone Washed
manicatura: stainless steel N690Co 58 / 60HRC
blade length: 70mm.
blade thickness: 6.3mm.
total length: 172mm.
Weight: 95g.
Sheath: Kydex, neck
Package: Cardboard box with logos Extrema Ratio
Notes: possibility of using the sheath with MOLLE systems or Tek-Lok (not included in the package)

NK3 is a small knife that extends the family of the neck knives Extrema Ratio.

It differs from the models NK1 and NK2 for the largest size of the blade-type "long" 70mm. The ergonomic grip is designed so as to prevent accidental cuts during withdrawal from the scabbard.

On the back it is formed a drain for the positioning of the thumb or index depending on use. The structure enables both use for work or cutting very effective for small precision work.

The Kydex sheath is a quick release and is supplied to the port of paracord knife in his neck.

intended use: Neck Knife
type of production: Industrial
production country: Italy
Blade: stainless steel N690Co 58 / 60HRC
Blade treatment: Black PVD cat. MIL-C-13924
manicatura: stainless steel N690Co 58 / 60HRC
blade length: 70mm.
blade thickness: 6.3mm.
total length: 172mm.
Weight: 95g.
Sheath: Kydex, neck
Package: Cardboard box with logos Extrema Ratio
Notes: possibility of using the sheath with MOLLE systems or Tek-Lok (not included in the package)

Folding knife with rescue karambit connotation, adopted by the special units of the Police of the Principality of Monaco U.S.I.V.P. The knife gets its name from a development and consulting department of the special intervention forces Monegasque.

Intended use: Tactical / Rescue

Type of production: Industrial
Production Country: Italy
Blade: Stainless steel 58HRC N690Co
Blade treatment: Stone Washed
Handle: Anticorodal
Blade length: 73.5mm.
Blade thickness: 3mm.
Closed Length: -
Overall length: 196mm.
Thick when closed: -
Weight: 166g.
Lock: Liner Lock with safety catch further
Clip: Stainless Steel
Packaging: black cardboard with Extrema Ratio logos
Notes: Size emergency belts and skull crasher

Folding knife with rescue karambit connotation, adopted by the special units of the Police of the Principality of Monaco U.S.I.V.P. The knife gets its name from a development and consulting department of the special intervention forces Monegasque.

Intended use: Tactical / Rescue

Type of production: Industrial
Production Country: Italy
Blade: Stainless steel 58HRC N690Co
Blade treatment: Testudo MIL-C-13924
Handle: Anticorodal
Blade length: 73.5mm.
Blade thickness: 3mm.
Closed Length: -
Overall length: 196mm.
Thick when closed: -
Weight: 166g.
Lock: Liner Lock with safety catch further
Clip: Stainless Steel
Packaging: black cardboard with Extrema Ratio logos
Notes: Size emergency belts and skull crasher

Intended use: Tactical

Type of production: Industrial
Production Country: Italy
Blade: Stainless steel 58HRC N690Co
Blade treatment: Testudo MIL-C-13924
Handle: Anticorodal
Blade length: 68mm.
Blade thickness: 4mm.
Closed Length: 110mm.
Overall length: 181mm.
Thick when closed: 23mm. (15mm without clips)
Weight: 139g.
Lock: Liner Lock with safety catch further
Clip: Stainless Steel
Packaging: black cardboard with Extrema Ratio logos

NK3 is a small knife that extends the family of the neck knives Extrema Ratio.

It differs from the models NK1 and NK2 for the largest size of the blade-type "long" 70mm. The ergonomic grip is designed so as to prevent accidental cuts during withdrawal from the scabbard.

On the back it is formed a drain for the positioning of the thumb or index depending on use. The structure enables both use for work or cutting very effective for small precision work.

The Kydex sheath is a quick release and is supplied to the port of paracord knife in his neck.

intended use: Neck Knife
type of production: Industrial
production country: Italy
Blade: stainless steel N690Co 58 / 60HRC
Blade treatment: Black PVD cat. MIL-C-13924
manicatura: stainless steel N690Co 58 / 60HRC
blade length: 70mm.
blade thickness: 6.3mm.
total length: 153mm.
Weight: 82g.
Sheath: Kydex, neck
Package: Cardboard box with logos Extrema Ratio
Notes: possibility of using the sheath with MOLLE systems or Tek-Lok (not included in the package)

NK3 is a small knife that extends the family of the neck knives Extrema Ratio.

It differs from the models NK1 and NK2 for the largest size of the blade-type "long" 70mm. The ergonomic grip is designed so as to prevent accidental cuts during withdrawal from the scabbard.

On the back it is formed a drain for the positioning of the thumb or index depending on use. The structure enables both use for work or cutting very effective for small precision work.

The Kydex sheath is a quick release and is supplied to the port of paracord knife in his neck.

intended use: Neck Knife
type of production: Industrial
production country: Italy
Blade: stainless steel N690Co 58 / 60HRC
Blade treatment: Black PVD cat. MIL-C-13924
manicatura: stainless steel N690Co 58 / 60HRC
blade length: 70mm.
blade thickness: 6.3mm.
total length: 153mm.
Weight: 82g.
Sheath: Kydex, neck
Package: Cardboard box with logos Extrema Ratio
Notes: possibility of using the sheath with MOLLE systems or Tek-Lok (not included in the package)

NK3 is a small knife that extends the family of the neck knives Extrema Ratio.

It differs from the models NK1 and NK2 for the largest size of the blade-type "long" 70mm. The ergonomic grip is designed so as to prevent accidental cuts during withdrawal from the scabbard.

On the back it is formed a drain for the positioning of the thumb or index depending on use. The structure enables both use for work or cutting very effective for small precision work.

The Kydex sheath is a quick release and is supplied to the port of paracord knife in his neck.

intended use: Neck Knife
type of production: Industrial
production country: Italy
Blade: stainless steel N690Co 58 / 60HRC
Blade treatment: Stone Washed
manicatura: stainless steel N690Co 58 / 60HRC
blade length: 70mm.
blade thickness: 6.3mm.
total length: 153mm.
Weight: 82g.
Sheath: Kydex, neck
Package: Cardboard box with logos Extrema Ratio
Notes: possibility of using the sheath with MOLLE systems or Tek-Lok (not included in the package)

NK2 is a small knife that extends the family of the Extrema Ratio neck knives.

It differs from the model NK1 for blade tip tanto styled and for the increased thickness. The ergonomic grip is designed so as to prevent accidental cuts during withdrawal from the scabbard.

On the back it is formed a drain for the positioning of the thumb or forefinger depending on use. The structure enables both use for very effective cutting work or for small precision work.The quick release Kydex sheath is supplied with paracord for carrying on the neck.

Intended use: Neck Knife
Type of production: Industrial
Production country: Italy
Blade: stainless steel N690Co 58 / 60HRC
Blade treatment: Black PVD cat. MIL-C-13924
Handle: stainless steel N690Co 58 / 60HRC
Blade length: 50mm.
Blade thickness: 6.3mm.
Total length: 129mm.
Weight: 69g.
Sheath: Kydex, neck
Package: Cardboard box with Extrema Ratio logo
Notes: possibility of using the sheath with MOLLE systems or Tek-Lok (not included in the package)

NK2 is a small knife that extends the family of the neck knives Extrema Ratio.

It differs from the model NK1 for blade-type "time" and for the increased thickness. The ergonomic grip is designed so as to prevent accidental cuts during withdrawal from the scabbard.

On the back it is formed a drain for the positioning of the thumb or index depending on use. The structure enables both use for work or cutting very effective for small precision work.The Kydex sheath is a quick release and is supplied to the port of paracord knife in his neck.

intended use: Neck Knife
type of production: Industrial
production country: Italy
Blade: stainless steel N690Co 58 / 60HRC
Blade treatment: Stone Washed
manicatura: stainless steel N690Co 58 / 60HRC
blade length: 50mm.
blade thickness: 6.3mm.
total length: 129mm.
Weight: 69g.
Sheath: Kydex, neck
Package: Cardboard box with logos Extrema Ratio
Notes: possibility of using the sheath with MOLLE systems or Tek-Lok (not included in the package)

With the T4000 C continues the purest series so Extrema Ratio, for lovers of the profile of Japanese blades that do not want to give up the accessories typically tactical as sheath and handle.

Intended use: Tactical / Backup

Type of production: Industrial
Production Country: Italy
Blade: stainless steel Bohler N690Co to 58HRC
Treatment blade: Browning MIL-C-13924
Handle: Forprene
Blade length: 104mm.
Blade thickness: 4mm.
Length closed: -
Overall length: 208mm.
Thick when closed: -
Balancing: -
Weight: 196g.
Closing: -
Clip: -
Sheath: Nylon
Packaging: Cardboard box with logos Extrema Ratio
Notes: -

This knife was designed and perfected in every detail for its primary use in the marine environment. The blade has a flat rounding that allows symmetrical cutting work with wider support. The tip, on the other hand, which is thick and durable thanks to the tanto version, allows greater penetration and a sharper, more precise cut. The stone washed finish process facilitates locating in the marine environment.

The structure of the handle, made of anodized anticorodal aluminum, features a design with milling in concentric circles and lightening and anti-slip perforations so as to facilitate rinsing from saltiness. A small slot is cut into the middle of the cheek piece to allow for tightening or releasing smaller shackles. BF2 V is equipped with reversible clip; adjusting screw retainer for closing and opening the blade; 70-mm. knot shock ankle with fastening mechanism; and correctable. The presentation of the BF2 V took place on the Amerigo Vespucci School Ship.




Intended use: sporting/nautical

Type of production: industrial
Blade: stainless steel N690Co 58HRC with Stone Washed finish
Country of Production: Italy
Handle: Anticorodal with stainless steel reinforcements
Blade length: 65mm.
Blade thickness: 3mm.
Length closed: 124mm.
Total length: 190mm.
Weight: 149g.
Closure: Liner Lock
Clip: reversible and removable stainless steel
Notes: Anklet/knife lock - Small sized turnbuckle - Quick-release tactical corrector - Open knife safety catch - Safety catch for Anklet/knife lock

Intended use: Tactical / Military

Type of production: industrial
Country of production: Italy
Blade: stainless steel N690Co 58HRC
Handle: Anticorodal
Blade length: 90mm.
Blade thickness: 3mm.
Length closed: 124mm.
Total length: 210mm.
Weight: 140g.
Closure: Liner Lock
Clip: reversible and removable in stainless steel
Notes: additional safety stop with open knife

Intended use: tactical / military / multirole
Blade: full tang stainless steel N690Co 58HRC Desert Warfare
Handle: Removable in Forprene
Blade length: 180mm.
Blade Thickness: 6.3mm.
Closed Length: -
Overall length: 310mm.
Balancing: Advanced, 1.5 cm from the branch of the lower guard
Weight: 325g.
Closed: -
Clip: -
Sheath: modular tactical, from thigh or belt, Nylon and Kydex
Notes: -

Extrema Ratio Fulcrum Compact Testudo

After Shrapnel, Extrema Ratio gives us a second knife which, while having a total length of just 21 centimeters, it maintains all the technical / tactical previous models.

The Fulcrum C (compact) then goes to complete the series of Fulcrum fixed blade knife and turns out to be a robust and compact, suitable for use in emergency or concealed.

Occupation: knife backup
N690 steel blade with 58HRC coated testudo
Blade thickness: 6.3 mm.
Blade length: 110 mm.
Total length: 210 mm.
Handle in Forprene
ABS hard case with Tek-Lok coupling with automatic retention of the knife.

After the Shrapnel, Extrema Ratio gives us a second knife that, despite having a total length of only 21 centimeters, maintains all the technical / tactical characteristics of the previous models.

The Fulcrum C (compact) therefore completes the Fulcrum series with a fixed blade. Sturdy and compact knife, suitable for emergency or concealed use.

Intended use: Tactical / Sports

Type of production: Industrial
Country of production: Italy
Blade: N690Co stainless steel
Finish: camouflage coating
Handle: Forprene
Blade length: 110mm.
Blade thickness: 6.3mm.
Total length: 210mm.
Balancing: set back
Weight: 200g.
Sheath: rigid in ABS with Tek-Lok coupling with automatic knife retention system.
Packaging: Cardboard box with Extrema Ratio logos and manufacturer's certificates

Type of production: industrial
Blade: stainless steel N690Co 58HRC
Lama production: Italy
Handle: Anticorodal
Blade length: 70mm.
Blade thickness: 3mm.
Closed length: 99mm.
Total length: 168mm.
Balancing: -
Weight: 85g.
Closure: Liner Lock
Clip: reversible and removable in stainless steel
Sheath: -
Note:

RAO ACQUIRED FROM VERSION ' AIR FORCE
Folding knife made upon specific requests of the department of the Italian Army 185 ° RAO ( Target Acquisition Regiment ) and is now included the eponymous department . The knife supplied differs from the calendar for the total lack of writings or logos on the blade.

HISTORY ON THE DEPARTMENT :
The 185 ° RAO of the'' Thunderbolt '' and ' a department from the ancient tradition, but brand new . It was born April 3, 2000 following the reconfiguration of the 185 ° paratroopers land-based artillery regiment . Headquartered in Livorno, and ' a department atypical weapon of Artillery, currently placed in the basin of the Special Forces .

Composed entirely of volunteers , the 185 ° RAO selects its members through passing a physical test and a qualification course of modules '' in difficulty ' growing .'' The tasks assigned to the men of RAO are varied, but all delicate : it is to gather information on enemy targets and ' pass ' at his command . More 'in general , can' talk of '' reconnaissance '' in sensitive areas . '' E ' therefore obvious - underline the Army - that the activities ' of the buyer to occur mainly in hostile territory , in small groups acting on their own self-sufficient .''

The paratroopers of the RAO are specialists in the techniques of infiltration and exfiltration '' '' and are able to move into operational area '' up to 8-10 days without external supplies .'' '' They know how to evade capture , escape and escape from an ' area controlled by the enemy '' and, above all , as'' detect, determine and evaluate the objectives '' of strategic interest. Since 2002 , the year of reconfiguration , the detachments of the 185 th Regiment operated in all theaters of operation more ' hot : from the Balkans to Afghanistan, Iraq . Here performing reconnaissance especially for informational purposes in the medium and long-range surveillance of the area of responsibility ' of the Italian contingent .

Intended Use: Military / Tactical

Type of production : industrial
Production Blade: Italy
Blade: Stainless steel N690Co 58/60HRC Desert Warfare
Treatment Blade: GeoCamo
Handle : non corroding 4.5mm
Blade length: 118mm .
Blade Thickness: 6.3mm .
Length closed: 142
Total length: 261mm .
Balance: -
Weight: 335g .
Closure: front lock changed - safety pin threaded
Clip: -
Sheath: tactical nylon attacks by Vega Holster with MOLLE suitable for both closed and open the knife - colored desert
Notes: diamond sharpener included

Intended Use: Tactical/Military

Production type: Industrial
Country of Production: Italy
Blade: Steel N690Co 58HRC
Blade Finish: Testudo
Handle: Forprene
Blade Length: 140mm.
Blade thickness: 6.3mm.
Total length: 280mm.
Weight: 295g.
Sheath: Modular, cordura, with M.O.L.L.E system and with ABS inner shell
Packaging: black cardboard box with Extrema Ratio logos
Notes: -

A compact and compact multi-role knife with ABS fast release sheath with two multiposition clips and tight enough to be secured inside the passers-through of the M.O.L.L.E. - Available in four color variants: Black, Desert, Ranger Green and HCS (Hybrid Coyote Sage)

Intended use: tactical / multi role

Type of production: industrial
Country of production: Italy
Blade: N690Co stainless steel hardened to 58HRC
Blade Treatment: Satin
Handle: Forprene
Blade Length: 116mm.
Blade thickness: 4mm.
Total Length: 237mm.
Weight: 85g.
Sheath: in ABS with two multiposition clips, designed for type M.O.L.L.E.
Packing: Cardboard box with Extrema Ratio logos
Notes: -