Survival Knives: Essential Tools for Hiking and Outdoor Adventures

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.

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

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

Satre Expeditions, as well as the Satre model from which it derives, is a fixed blade knife of small dimensions, light and extremely resistant. Given its characteristics, it can be used in a wide range of disciplines and uses or as part of an EDC (Every Day Carry) kit.

It has been designed in collaboration with Daniele Dal Canto, Master Advanced F.I.S.S. (Federazione italiana survival sportivo e sperimentale) instructor. In Neck Knife mode, through the use of a 550 paracord lanyard, it is possible to hold it around the neck keeping the knife vertical with the handle facing downwards.

The metal eyelets on the sheath, made of pre-shaped Kydex, allow the application of both the lanyard and the accessory holder. 

The full-tang skeletonized structure, allows you to customize the knife using Paracord as a coating for the handle.

Satre Expeditions uses Böhler N690 steel heat treated to 58 HRC with MIL-C-13924 burnishing and stone washed surface treatment (Dark Stone finish). It comes with a desert-colored pre-formed kydex sheath on which you can attach the Firesteel for lighting fires (provided inside the box).

Intended use: Neck knife / Hiking / Utility

Production type: industrial
Country of production: Italy
Blade: Stainless steel N690Co 58
Blade finish: Burnishing MIL-C-13924 with Dark Stone finish
Handle: Stainless steel N690Co 58
Blade length: 70mm.
Blade thickness: 5mm.
Total length: 163mm.
Weight: 78g.
Scabbard: Kydex, for neck.
Packaging: Cardboard box with Extrema Ratio logos.
Notes:Designed and developed thanks to the collaboration with the instructor Daniele del Canto of F.I.S.S.S. (Federazione Italiana Survival Spotivo e Sperimentale).

Sethlans Expeditions, as well as the Sethlans model from which it derives, is a fixed blade work knife designed to deal with a wide range of situations, but also as a backup blade. The Sethlans Expeditions has been designed in collaboration with Daniele Dal Canto, Master Advanced F.I.S.S. (Federazione italiana survival sportivo e sperimentale) instructor.

Sethlans Expeditions has a Böhler N690 steel blade heat treated to 58 HRC with MIL-C-13924 burnishing and stone washed surface treatment (Dark Stone finish). The knife comes with desert colored G10 grips that feature the ergonomic design characteristic of Extrema Ratio handles. They can be removed to free the skeleton structure of the knife, allowing maximum lightness with minimum thickness.

For lovers of extreme customization, the full-tang structure allows the handle to be covered with paracord. The sheath is composed of a very light and minimalist Kydex part. It can be disassembled and can be adapted to both left- and right-handed people. The addition of an optional belt clip allows both vertical and horizontal positioning of the knife and makes the sheath much more versatile than the textile version. It is equipped with a mini pouch with M.O.L.L.E. system containing paracord with flammable filament to be used in case of emergency and/or critical weather conditions and a Firesteel for lighting fires.

Intended use: Survival / Bushcraft / Utility

Production type: Industrial
Country of Production: Italy
Blade: full tang in stainless steel N690Co 58HRC
Blade Finish: Burnishing MIL-C-13924 with Dark Stone finish
Handle: G-10
Blade length: 107mm.
Blade thickness: 6.3mm.
Total length: 224mm.
Weight: 207g.
Sheath: Kydex and cordura, M.O.L.L.E. compatible.
Package: Cardboard box with Extrema Ratio logos.
Notes: Designed and developed thanks to the collaboration with the instructor Daniele del Canto of F.I.S.S.S. (Federazione Italiana Survival Spotivo e Sperimentale).

Kreios Expeditions, as well as the Kreios model from which it derives, has been designed and developed thanks to the collaboration with the Master instructor F.I.S.S. (Federazione Italiana Survival Sportivo e Sperimentale) Daniele Dal Canto. It is defined by its creator as a sort of "off the road" of cutting tools, therefore not a specific disposable tool, but a multi-tasking tool, extremely versatile and designed to cope with many uses.

Thanks to its ergonomics, weight and size, Kreios Expeditions is suitable to open gaps in the thick vegetation, especially where it is necessary to take distance, for safety reasons, from thorny or harmful essences. Thanks to its robustness, it is an effective machete even in the heaviest field work. Combining the 32 cm of the "full flat" cutting edge, the 11° forward inclination of the blade and the 630 gr. of its weight, you get a tool with extraordinary cutting capabilities that does not fear bending.

Kreios Expeditions brings modern geometry and materials combined with the lines and effectiveness of blades typical of the Malaysian and African tradition, creating an ideal tool for field work but also, if necessary, for defense/offense. Kreios Expeditions is equipped with a desert color forprene handle and a BÖHLER N690 (58HRC) steel blade with MIL-C-13924 burnishing and stone washed surface finish (Dark Stone finish). It is supplied with a desert Cordura sheath with MOLLE system and strap for safety carry, equipped with a mini pouch containing paracord with flammable filament to be used in case of emergency and/or critical weather conditions and a Firesteel for lighting fires.

Intended Use: Chopper / Machete / Heavy Utility

Production type: Industrial
Country of Production: Italy
Blade: Stainless steel N690Co 58/60HRC
Blade Finish: Burnishing MIL-C-13924 with Dark Stone finish
Handle: Forprene
Blade Length: 324mm.
Blade thickness: 6.3mm.
Total length: 476mm.
Weight: 642g.
Sheath: Cordura, M.O.L.L.E. compatible.
Package: Cardboard box with Extrema Ratio logos.
Notes: Designed and developed thanks to the collaboration with the instructor Daniele del Canto of F.I.S.S.S. (Federazione Italiana Survival Spotivo e Sperimentale).

The M2M is a fixed blade hunting knife. Its small size and very low weight make it extremely handy and easy to carry.

Intended use: Sports, hunting

Type of production: Industrial
Production Lama: Italy
Blade: M390 stainless steel
Handle: Santos wood
Blade length: 90mm.
Blade thickness: 4mm.
Total length: 202mm.
Balance: 2 cm back
Weight: 132g.
Sheath: leather
Packaging: cardboard box with Lion Steel logos

The M2M is a fixed blade hunting knife. Its small size and very low weight make it extremely handy and easy to carry.

Intended use: Sports, hunting

Type of production: Industrial
Production Lama: Italy
Blade: M390 stainless steel
Handle: Micarta Green
Blade length: 90mm.
Blade thickness: 4mm.
Total length: 202mm.
Balance: 2 cm back
Weight: 148g.
Sheath: leather
Packaging: cardboard box with Lion Steel logos

The M2M is a fixed blade hunting knife. Its small size and very low weight make it extremely handy and easy to carry.

Intended use: Sports, hunting

Type of production: Industrial
Production Lama: Italy
Blade: M390 stainless steel
Handle: G10
Blade length: 90mm.
Blade thickness: 4mm.
Total length: 202mm.
Balance: 2 cm back
Weight: 161g.
Sheath: leather
Packaging: cardboard box with Lion Steel logos

The "Extrema Ratio Sethlans" is a fixed blade work knife created to face a wide range of situations, suitable for survival, bushcraft, prepping, but also as a backup blade. The Sethlans is available in two versions with two different types of steel.

Black version that uses D2 steel, heat treated and cryogenically treated at 60 HRC, which has a high resharpening capacity even with makeshift tools. To give greater qualities of hardness and resistance, the blade is coated with the new Teflon-based product "EXP DARK", proposed by Extrema Ratio.

The knife comes with G10 grips that feature the ergonomic design characteristic of Extrema Ratio handles. They can be removed by releasing the skeletonized structure of the knife, which allows maximum lightness with minimum thickness. For lovers of extreme customization, the full-tang structure allows the handle to be covered with a paracord cord.

The sheath is composed of a part in very light and minimalist Kydex. It can be disassembled and can be adapted for both left and right handed users. The addition of an optional belt clip allows the knife to be positioned both vertically and horizontally and makes the sheath much more versatile than the textile version. It is also equipped with a mini pouch with M.O.L.L.E. system. containing a double-sided stone for sharpening and a firesteel for lighting fires.

Intended use: Hiking / Bushcraft

Country of Production: Italy
Type: Fixed Blade
Blade length: 107mm
Total length: 224mm
Blade thickness: 6.3mm
Sharpening: Flat edge
Weight: 207g
Blade Material: D2 Steel (60HRC)
Blade finish: Teflon-based Exp Dark
Handle: G10
Notes: designed in collaboration with Daniele Dal Canto, Master Advanced F.I.S.S.S. (Italian Federation of Sports and Experimental Survival).

The "Extrema Ratio Sethlans" is a fixed blade work knife created to face a wide range of situations, suitable for survival, bushcraft, prepping, but also as a backup blade. The Sethlans is available in two versions with two different types of steel.

Stone Washed version that uses Böhler N690 heat treated at 58 HRC, chosen for the reliability it has shown over the last 20 years due to its resistance to oxidation and durability of the wire.

The knife comes with G10 grips that feature the ergonomic design characteristic of Extrema Ratio handles. They can be removed by releasing the skeletonized structure of the knife, which allows maximum lightness with minimum thickness. For lovers of extreme customization, the full-tang structure allows the handle to be covered with a paracord cord.

The sheath is composed of a part in very light and minimalist Kydex. It can be disassembled and can be adapted for both left and right handed users. The addition of an optional belt clip allows the knife to be positioned both vertically and horizontally and makes the sheath much more versatile than the textile version. It is also equipped with a mini pouch with M.O.L.L.E. system. containing a double-sided stone for sharpening and a firesteel for lighting fires.

Intended use: Hiking / Bushcraft

Country of Production: Italy
Type: Fixed Blade
Use: Survival, bushcraft, prepping
Blade length: 107mm
Total length: 224mm
Blade thickness: 6.3mm
Sharpening: Flat edge
Weight: 207 g
Blade Material: Böhler N690Co Steel (58HRC)
Blade Finish: Stone Washed
Handle: G10
Notes: designed in collaboration with Daniele Dal Canto, Master Advanced F.I.S.S.S. (Italian Federation of Sports and Experimental Survival).

Recommended use: hiking / heavy utility

Type of production: Industrial
Country of production: Italy
Blade: full tang, in Sleipner 60 / 61HRC steel
Blade finish: Satin
Handle: Micarta
Blade length: 180mm.
Blade thickness: 5.5mm.
Total length: 315mm.
Balancing: advanced
Weight: 410g.
Sheath: Kydex and Nylon, modular, multiposition, MOLLE compatible
Packaging: Cardboard box with Lion Steel logos
Note: -

Intended use: Chopper / Machete

Type of production: Industrial
Production Lama: Italy
Blade: stainless steel, hardened to 54HRC N690Co
Treatment Lama: Testudo
Handle: Forprene
Blade length: 280mm.
Blade thickness: 4mm.
Length closed: -
Overall length: 450mm.
Thick when closed: -
Balancing: -
Weight: 370g.
Closing: -
Clip: -
Sheath: Nylon with attacks belt and MOLLE type
Packaging: Cardboard box with logos Extrema Ratio
Notes: Studied and designed to sever the thick vegetation broadleaf, typical of tropical forests and rainforests.

Type of production: Industrial
Production Blade: Italy
Blade: Full tang, stainless Sleipner 60/61HRC
Treatment Blade: TiNi
Handle: Micarta
Blade length: 180mm.
Blade thickness: 5.5mm.
Length closed: -
Overall length: 315mm.
Thick when closed: -
Balancing: -
Weight: 410g.
Closure: -
Clip: -
Sheath: Kydex and Nylon, modular, multi-position, MOLLE compatible
Packaging: Cardboard box with logos Lion Steel
Notes: -

Type of production: Industrial
Production Blade: Italy
Blade: Full tang, stainless Sleipner 60/61HRC
Treatment Blade: Satin
Handle: Micarta
Blade length: 180mm.
Blade thickness: 5.5mm.
Length closed: -
Overall length: 315mm.
Thick when closed: -
Balancing: -
Weight: 410g.
Closure: -
Clip: -
Sheath: Kydex and Nylon, modular, multi-position, MOLLE compatible
Packaging: Cardboard box with logos Lion Steel
Notes: -

Dobermann IV rappresenta l'evoluzione del primo e piu' classico modello Extrema Ratio: il Doberman.

Questo modello è caratterizzato da un uso estremamente flessibile, dalla caccia alla sopravvivenza, per questo il Dobermann IV e' stato sviluppato in due configurazioni, una tattica, l'altra sportiva.

Dal 97, il dobermann ha subito notevoli mutamenti estetici e progettuali basati sull'evoluzione del gusto e delle tendenze, pur mantenendo una linea coerente ai disegni originali. Dobermann IV fa della flessibilità d'uso e della resistenza strutturale la sua caratteristica principale.

Destinazione d'uso: Tattico / Collezione

Tipo di produzione: Industriale
Produzione Lama: Italia
Lama: in acciaio inox N690Co
Trattamento Lama: Testudo
Manicatura: Forprene
Lunghezza lama: 185mm.
Spessore lama: 6.3mm.
Lunghezza totale: 315mm.
Peso: 360g.
Fodero: in Nylon e materiale plastico
Confezione: Scatola di cartone con loghi Extrema Ratio
Note: -