Knife - Essential Tool for Camping, Outdoor Adventure and collection
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ExtremaRatio - 185° RAO knife - PRIVATE COLLECTION - Knife
PREVIOUSLY PURCHASED KNIFE, PRIVATE COLLECTION
* Origin: acquired from private owner - SERIAL CK0191S - produced in 2021
* Condition: overall very good condition (see photos)
* Market availability: no longer in production in this unit-marked version
* Sharpening: factory edge
* Blade marks: none
* Handle marks: none
* Box: present, slightly damaged
* Sheath: included
* Manuals, certificates and warranty: included
* Checked and certified by our internal laboratory
Folding knife made according to specifications requested by the Italian Army unit 185th RAO (Regiment for Target Acquisition) and currently in service with the same unit. The service version differs from the civilian one only by the complete absence of writings or logos on the blade.
HISTORICAL NOTES ON THE UNIT:
The 185th RAO of the "Folgore" is a unit with ancient traditions, yet relatively new in its current form. It was established on 3 April 2000 following the reorganization of the 185th Paratroopers Artillery Regiment. Based in Livorno, it is an atypical artillery unit currently included within the Special Forces framework.
Composed entirely of volunteer personnel, the 185th RAO selects its members through physical tests and a qualification course structured in modules of increasing difficulty. The tasks assigned to RAO operators are numerous and highly sensitive: they involve gathering information on enemy targets and relaying it to command. More generally, this can be described as reconnaissance in sensitive areas.
"It is therefore clear," the Army emphasizes, "that the activity of the acquisition operator takes place mainly in hostile territory, in small self-sufficient teams operating in isolation."
RAO paratroopers are specialists in infiltration and exfiltration techniques and are able to operate in the field for up to 8–10 days without external resupply. They know how to avoid capture, escape and evade from enemy-controlled areas and, above all, how to identify, define and assess strategically relevant targets. Since 2002, the year of its reorganization, detachments of the 185th Regiment have operated in all major operational theaters: from the Balkans to Afghanistan and Iraq. In these areas they mainly carry out medium- and long-range reconnaissance and surveillance activities within the area of responsibility of the Italian contingent.
Intended use: military/tactical
Type of production: industrial
Blade production: Italy
Blade: N690Co stainless steel 58/60HRC
Blade treatment: MIL-C 13924 black coating
Handle: anodized anticorodal aluminum 4.5mm
Blade length: 118mm
Blade thickness: 6.3mm
Closed length: 142mm
Total length: 261mm
Weight: 335g
Lock: modified front lock with additional threaded safety pin
Clip: none
Sheath: tactical nylon MOLLE-compatible, suitable for both closed and open knife use
Notes: diamond pocket sharpener includedER-RAO-BK-CP -
ExtremaRatio - Fulcrum Bayonet EVO NFG - Stonewashed N690Co & Desert Forprene - Multi-purpose Knife
Following the success of the FULCRUM multi-purpose knife, the bayonet version was developed, designed for even more specific and demanding applications. Like the FULCRUM, the bayonet is an extremely robust and versatile knife: the blade withstands breaking loads exceeding 150 kg, the tip is extremely durable, and the profile allows for extended use without compromising the sharpness of the cutting edge. The forward-shifted center of gravity, combined with the blade’s weight, ensures excellent performance in the most demanding fieldwork, offering power and control even under the toughest conditions.
The 2026 EVO model introduces a major design update: the knife’s tang now features a completely redesigned structure, engineered to improve structural rigidity and optimize stress management during the most intense use, while also offering a more precise and secure feel during technical tasks.
This specific civilian NFG (No Fixing Gear) version retains the same operational structure but lacks the rifle attachment mechanisms, making it more streamlined, lightweight, and geared toward professional outdoor use.
Intended Use: Multi-purpose / Utility / TacticalProduction Type: Industrial
Country of Manufacture: Italy
Blade: hidden tang in N690Co stainless steel, 58 HRC
Blade finish: Stonewashed
Handle: detachable, made of Forprene, with a full-tang guard and stainless steel tang.
Blade length: 180 mm.
Blade thickness: 6.3 mm.
Overall length: 309 mm.
Weight: 391 g.
Sheath: modular tactical nylon thigh sheath with polymer interior, equipped with a wire cutter and diamond-coated plate for field sharpening
Packaging: Cardboard box with Extrema Ratio logos
Notes: Civilian version without weapon attachment systems, making the Fulcrum EVO Bayonet a standard knife available for free sale and legal possessionER-FBEVNF-SW -
ExtremaRatio - Fulcrum Bayonet EVO NFG - Black N690Co & OD Green Forprene - Multi-purpose Knife
Following the success of the FULCRUM multi-purpose knife, the bayonet version was developed, designed for even more specific and demanding applications. Like the FULCRUM, the bayonet is an extremely robust and versatile knife: the blade withstands breaking loads exceeding 150 kg, the tip is extremely durable, and the profile allows for extended use without compromising the sharpness of the cutting edge. The forward-shifted center of gravity, combined with the blade’s weight, ensures excellent performance in the most demanding field work, offering power and control even under the toughest conditions.
The 2026 EVO model introduces a major design update: the knife’s tang now features a completely redesigned structure, engineered to improve structural rigidity and optimize stress management during the most intense use, while also offering a more precise and secure feel during technical tasks.
This specific civilian NFG (No Fixing Gear) version retains the same operational structure but lacks the rifle attachment mechanisms, making it more streamlined, lightweight, and geared toward professional outdoor use.
Intended Use: Multi-purpose / Utility / TacticalProduction Type: Industrial
Country of Manufacture: Italy
Blade: Hidden tang in N690Co stainless steel, 58 HRC
Blade Finish: MIL-C-13924 burnished
Handle: Detachable, made of Forprene, with a full-length guard and burnished stainless steel tang.
Blade length: 180mm.
Blade thickness: 6.3mm.
Overall length: 309mm.
Weight: 391g.
Sheath: Modular tactical nylon thigh sheath with polymer interior, equipped with a wire cutter and diamond-coated plate for field sharpening
Packaging: Cardboard box with Extrema Ratio logos
Notes: Civilian version without weapon attachment systems, making the Fulcrum EVO Bayonet a standard knife available for free sale and legal possessionER-FBEVNF-OD -
ExtremaRatio - Fulcrum Bayonet EVO NFG - Black N690Co & Black Forprene - Multi-purpose Knife
Following the success of the FULCRUM multi-purpose knife, the bayonet version was developed, designed for even more specific and demanding applications. Like the FULCRUM, the bayonet is an extremely robust and versatile knife: the blade withstands breaking loads exceeding 150 kg, the tip is extremely durable, and the profile allows for extended use without compromising the sharpness of the cutting edge. The forward-shifted center of gravity, combined with the blade’s weight, ensures excellent performance in the most demanding field work, offering power and control even under the toughest conditions.
The 2026 EVO model introduces a major design update: the knife’s tang now features a completely redesigned structure, engineered to improve structural rigidity and optimize stress management during the most intense use, while also offering a more precise and secure feel during technical tasks.
This specific civilian NFG (No Fixing Gear) version retains the same operational structure but lacks the rifle attachment mechanisms, making it more streamlined, lightweight, and geared toward professional outdoor use.
Intended Use: Multi-purpose / Utility / TacticalProduction Type: Industrial
Country of Manufacture: Italy
Blade: Hidden tang in N690Co stainless steel, 58 HRC
Blade Finish: MIL-C-13924 burnished
Handle: Detachable, made of Forprene, with a full-length guard and burnished stainless steel tang.
Blade length: 180mm.
Blade thickness: 6.3mm.
Overall length: 309mm.
Weight: 391g.
Sheath: Modular tactical nylon thigh sheath with polymer interior, equipped with a wire cutter and diamond-coated plate for field sharpening
Packaging: Cardboard box with Extrema Ratio logos
Notes: Civilian version without weapon attachment systems, making the Fulcrum EVO Bayonet a standard knife available for free sale and legal possessionER-FBEVNF-BK -
ExtremaRatio - Selvans - S600 Black - Heavy Utility Survival Knife - knife
The Selvans S600 Black is a survival knife with total black design, made of Böhler S600 steel with hardness of 64 HRC. Powered by the excellent properties of this steel, it is designed to cope with extreme environments and outdoor operations such as cutting branches and building shelters.
Created through a collaboration between Extrema Ratio and AIGS guide Daniele Dal Canto, Selvans has gained notoriety for its versatility and toughness. The 160 mm, 6.3 mm thick blade is ideal for chopping and batoning operations, providing excellent performance even under heavy loads.
The black forprene handle ensures a secure grip, even with wet hands or gloves. Böhler S600 steel, used in industrial tools, offers wear resistance and holds the edge for a long time thanks to cryogenic treatment and 64 HRC hardness. The EXP DARK coating protects the blade from oxidation, while the Cordura thigh sheath with MOLLE system allows for convenient carrying.
Perfect for hiking, bushcraft and survival situations, the Selvans S600 Black is the ideal companion for any outdoor adventure.
Intended Use: Survival / Heavy Utility
Production Type: Industrial
Country of Production: Italy
Blade: 64HRC Bohler S600 carbon steel
Blade finish: EXP DARK coating
Handle: Forprene
Blade length: 160mm.
Blade thickness: 6.3mm.
Total length: 312mm.
Balance: advanced
Weight: 407g.
Sheath: cordura, M.O.L.L.E. compatible.
Packaging: cardboard box with Extrema Ratio logos
Notes: designed and developed through collaboration with instructor Daniele del CantoER-SEL-S600B -
ExtremaRatio - Fulcrum Black - N690Co & Forprene - knife
The FULCRUM is a milestone among multi-role knives.
Deployed on a large scale in Afghanistan as standard equipment by components of the Italian "Nibbio" mission, it is part of an experimental individual equipment renewal project undertaken by the Alpine Troops Command. During the preparation for this important mission, Alpine Troops Command coordinated a team of companies in the production of a complete and renewed experimental individual equipment.
The FULCRUM is an extremely robust and versatile knife.
The blade can withstand breaking loads in excess of 150 kilograms, the tip is extremely strong and the tanto profile allows the knife to be worked on for a long time without affecting the sharpness of the last section.
The advanced center of gravity and weight of the blade make it suitable for heavy field work.
Intended use: tactical/military/multipurposeType of production: industrial
Country of manufacture: Italy
Blade: stainless steel N690Co
Blade finish: burnishing MIL-C-13924
Handle: forprene, removable
Blade length: 180mm.
Blade thickness: 6.3mm.
Total length: 213mm.
Weight: 325g.
Sheath: modular tactical, thigh or belt, made of Nylon and polymers
Packaging: cardboard box with Extrema Ratio logos
Notes: -ER-FUL-B -
ExtremaRatio - Selvans Expeditions - Heavy Utility Survival Knife - knife
Selvans Expeditions, as well as the Selvans model from which it derives, was born from the collaboration between Extrema Ratio and the Master instructor F.I.S.S. (Federazione Italiana Survival Sportivo e Sperimentale) Daniele Dal Canto. This tool is the result of the modification of the ONTOS, military survival knife, realized in order to accentuate and maximize the performance of the knife.
Selvans Expeditions uses Böhler N690 steel heat treated to 58 HRC with MIL-C-13924 burnishing and stone washed surface treatment (Dark Stone finish). The handle has been lengthened and the blade weighted to promote effective cutting strokes. It comes with a desert Cordura sheath with MOLLE system, equipped with a mini pouch containing paracord with flammable filament that can be used in case of emergency and/or critical weather conditions and a Firesteel for lighting fires.
The survival kit (not included and purchasable separately) has been optimized and includes whistle, chainsaw, drinking pads, compass, brass wire, flintlock, flashlight, paracord 2,5 mt. and sharpener.
Intended use: Survival / Heavy Utility
Production type: Industrial
Country of Production: Italy
Blade: Stainless steel N690Co 58HRC
Blade Finish: Burnishing MIL-C-13924 with Dark Stone finish
Handle: Forprene
Blade length: 160mm.
Blade thickness: 6.3mm.
Total length: 312mm.
Balance: Advanced
Weight: 430g.
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).ER-SEL-EX -
ExtremaRatio - Herring NE - Fairbairn Sykes Dagger - tactical knife
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: -ER-HERNE -
ExtremaRatio - SERE 2 - GOI Gruppo Operativo Incursori - rescue knife
S.E.R.E. 2, adopted by the Operational Group of Italian Navy Incursors, is the development of the S.E.R.E. 1, created by a study group composed of Special Forces operators, martial artists and experts in survival techniques. This variant 2 has been revised according to the needs expressed by the Department.
The acronym S.E.R.E. refers to the four principles "Survival, Evasion, Resistance and Escape" which make up the training program provided to military personnel at high risk of capture.
The S.E.R.E. 2 is suitable for both tip and cut use. The unique grip, unlike the classic blades of this type, is fixed between the index and the middle, thus forming a single axis from the tip of the blade to the user's wrist, allowing its use also in reverse grip. The handle has the same ergonomics as the butt of a firearm; this grip allows an instinctive and immediate use, being able to easily integrate the training in the training activity.
The geometry of the tip ensures maximum penetration, at the same time its axial profile with a triangular base protects its resistance. The design of the blade has on one side a partially serrated profile to favor the cutting of cordages, and on the other hand a classic cut or straps that, unlike the previous model, has re-sharpening and interchangeable blades.
The central loop, which has the dual function of lightening and turn-crickets, recalls the maritime origins of its creators. The peculiarity of the knife is that it has been specifically designed to be used even without the handle; the two holes in the part dedicated to the handle facilitate assembly.
The kydex sheath has a basic retention that can be used alone for operators who need extremely fast knife use, and a removable locking lock if necessary. The knife is supplied with double safety for ambidextrous mounting. An insert with a flat-blade screwdriver is available as an accessory. Comes with belt clip for belt fastening and paracord for fixing on the M.O.L.L.E. system.
"Using the gun, knife or other weapon for us is the same thing: it's just the extension of the hand." Quote from a commander of the ward.
Intended use: Tactical / Military / RescueType of production: Industrial
Lama production: Italy
Blade: stainless steel N690Co 58HRC
Blade treatment: Burnishing MIL-C-13924
Handle: Forprene
Blade length: 148mm.
Blade thickness: 6.3mm.
Total length: 217mm.
Thickness when closed: -
Weight: 306g.
Sheath: In Kydex, with Tek-Lok hooking system
Packaging: Cardboard box with Extrema Ratio logos
Note: -ER-SERE2 -
ExtremaRatio - N.K.3 Karambit Desert Warfare - Neck Knife - NK3K - knife
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)12636 -
ExtremaRatio - N.K.3 Karambit Black - Neck Knife - NK3K - knife
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)ER-NK3K-BK -
ExtremaRatio - Fulcrum C FH - Full Handle - Black - knife
Intended use: Tactical
Type of production: Industrial
Production Country: Italy
Blade: N690Co 58HRC stainless steel
Blade treatment: burnishing MIL-C-13924
Handle: Forprene
Blade length: 110mm.
Blade thickness: 6.3mm.
Overall length: 240mm.
Weight: 241g.
Sheath: ABS, with Tek-Lok type of coupling system
Packaging: cardboard box with Extrema Ratio logos
Notes: long-handled version of the model Shrapnel OGER-FUC-FHB -
ExtremaRatio - N.K.3 Desert Warfare - Neck Knife - NK3 - knife
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)ER-NK3-DW -
ExtremaRatio - N.K.3 Black - Neck Knife - NK3 - knife
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)ER-NK3-BK -
ExtremaRatio - N.K.3 Stone Washed - Neck Knife - NK3 - knife
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)12450 -
ExtremaRatio - N.K.2 Black - Neck Knife - NK2
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)ER-NK2-BK -
ExtremaRatio - N.K.2 Stone Washed - Neck Knife - NK2
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)ER-NK2-SW -
ExtremaRatio - Selvans - Heavy Utility Survival Knife
The Selvans is born from the collaboration between Extrema Ratio and FISSS (Italian Federation of Sports and Experimental Survival). The project consists of modifying Ontos, a military survival knife, to accentuate and maximize the knife's performance as a hiking tool.
The handle has been lengthened and the blade weighed down to facilitate the effectiveness of the cutting strokes and to make more use of the inertia of the blow.
Intended use: Heavy Utility
Type of production: Industrial
Country of production: Italy
Blade: stainless steel N690Co 58HRC
Surface treatment: Brun-MIL-C-13924
Handle: Forprene
Blade length: 15.5mm.
Blade thickness: 6.3mm.
Total length: 310mm.
Balancing: advanced
Weight: 424g.
Sheath: nylon, MOLLE compatible
Packaging: Cardboard box with Extrema Ratio logos
Note: developed in collaboration with FISSS (Italian Federation of Sports and Experimental Survival)10849 -
ExtremaRatio - Fulcrum Compact - Black N690Co & Forprene - knife
The Fulcrum C Black is the compact version of the famous Fulcrum knife, designed by Extrema Ratio to offer maximum reliability in a smaller, easily transportable format. Designed for tactical and emergency use, this fixed-blade knife stands out for its strength, ergonomics and versatility.
The blade measures 110 mm and features a tanto profile, with flat sharpening and 40 mm partial teeth, ideal for effectively cutting tough materials such as ropes and fabrics. Made of Böhler N690 steel hardened to 58 HRC, it is protected by a black burnished MIL-C-13924 finish, which provides corrosion resistance and reduces glare.
The handle is made of Forprene, a material resistant to weathering, impact and mechanical stress, offering a secure grip even in extreme conditions. The ergonomic and compact handle makes the Fulcrum C particularly suitable for use in confined spaces or as a backup tool.
The knife features a rigid ABS sheath, which can be mounted vertically, horizontally, or at a 45-degree angle, offering great flexibility in carrying and quick draw.
Main specifications:
Blade length: 110 mm
Total length: 214 mm
Blade thickness: 6.3 mm
Blade material: Böhler N690 steel (58 HRC)
Blade finish: burnishing MIL-C-13924
Sharpening: flat edge with partial serration (40 mm)
Handle material: Forprene
Weight: 226 g
Sheath: rigid ABS, with multiple carry options
Manufacturing: Made in ItalyER-FU-CBK -
ExtremaRatio - Fulcrum Compact knife Desert Warfare - 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 certificatesER-FUC-DW -
Extrema Ratio - Fulcrum Desert Warfare - 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: -ER-FUL-DW -
ExtremaRatio - 185° RAO - 2018 Version - heavy folding knife
New version 2018 with improved grip: uses the same handle as the RAO II model
Folding knife made to specific requests of the Italian Army department 185 ° RAO (Regiment Acquisition Objectives) and currently supplied to the homonymous department. The supplied knife differs from the civil one only because of the total lack of writing or logos on the blade.
HISTORICAL SUMS ON THE DEPARTMENT:
The 185 ° RAO of the '' Folgore '' is a department with an ancient tradition, but very new. In fact, it was born on April 3, 2000 following the reconfiguration of the 185th terrestrial paratroop artillery regiment. Based in Livorno, it is an atypical department of the artillery weapon, currently inserted in the Special Forces basin.Entirely composed of voluntary personnel, the 185th RAO selects its components through the passing of a physical test and a qualification course on modules '' with increasing difficulty ''. The tasks entrusted to the RAO's men are many, but all very delicate: it is about gathering information on enemy objectives and 'passing them' to one's command. More generally, it can talk about '' recognition in sensitive areas ''. '' It is therefore evident - they stress to the Army - that the activity of the acquirer takes place mainly in hostile territory, in small self-sufficient nuclei that act in isolation ''.
RAO paratroopers are specialists in '' infiltration and exfiltration '' techniques and are able to move in the operating area '' for up to 8-10 days without external supplies ''. They know how to 'escape from capture, escape and escape from an' enemy controlled area '' and, above all, as '' identify, determine and evaluate objectives '' of strategic interest. Since 2002, the year of reconfiguration, the 185th Regiment detachments have operated in all the hottest operational theaters: from the Balkans to Afghanistan, to Iraq. Here they mainly carry out surveys for medium and long-range information purposes and for monitoring the area of responsibility of the Italian contingent.
Destination of use: military / tactical
Type of production: industrial
Lama production: Italy
Blade: stainless steel N690Co 58 / 60HRC
Blade treatment: burnishing MIL-C 13924
Handle: 4.5mm anticorodal aluminum anodized
Blade length: 118mm.
Blade thickness: 6.3mm.
Length closed: 142mm.
Total length: 261mm.
Weight: 335g.
Closure: modified front lock with additional threaded security pin
Clip: absent
Sheath: tactical Nylon compatible M.O.L.L.E. suitable both for the closed and open knife
Notes: diamond pocket sharpener includedER-RAO-BK -
ExtremaRatio - 185° RAO Desert Warfare - knife
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 includedER-RAO-DW -
Strider Knives - Monkey Edge BT MEFP - Black CPM-3V & Frag Pattern Green G10 - PRIVATE COLLECTION - Knife
KNIFE PREVIOUSLY PURCHASED, FROM A PRIVATE COLLECTION
* Origin: Acquired from a private individual; previously purchased and used
* Condition: Structure intact, no functional compromises, fully operational and ready for use. Presence of slight surface marks on the finish and signs of age.
* Available on the market: Discontinued
* Sharpening: Factory-sharpened
* Marks on blade: Slight surface marks on the finish
* Marks on handle: None
* Box: /
* Sheath: Nylon, belt-mounted
* Manuals, Certificates, and Warranties: /
* Inspected and Certified by our in-house laboratoryThis Mick Strider-signed BT model features a black blade with a knurled thumb rest, a thickness of 6.4mm, and a full-tang construction to ensure maximum strength and durability.
The handle features green MEFP scales with a lanyard hole and an integrated pry bar on the back. Comes complete with a nylon sheath with a belt loop.
Strider Knives
Founded and run by former military personnel, Strider Knives is a company specializing in the development of cutting tools designed to withstand the most extreme operating conditions. The initial goal was to create a reliable utility knife, built with the highest quality materials yet affordable and easy to maintain by field personnel.
Over time, the brand has established itself as a benchmark in the world of tactical and professional knives, thanks to models developed specifically to meet the needs of military personnel, law enforcement, special operations personnel, hunters, and professional divers. Every design stems from a practical and functional approach, focused on maximum durability and reliability in the field.
Intended Use: Tactical / All-Rounder Utility
Production Type: Midtech
Country of Manufacture: USA
Blade: Full tang, CPM-3V crucible steel
Blade Finish: Black Coating
Handle: G10
Blade length: 161mm.
Blade thickness: 6.4mm.
Overall length: 308mm.
Balance: rear-weighted
Weight: 410g.
Sheath: Nylon, belt-mounted
Packaging: -
Notes: Previously purchased knife, from a private collectionST-BT-MEPP-CP -
Mission - MTK-Ti Knife - Half Serrated Beta Titanium & Black G10 - PRIVATE COLLECTION - Knife
RETIRED KNIFE FROM PRIVATE COLLECTION
* Provenance: Withdrawn from a private individual, previously purchased
* Condition: Iconic knife from the early 2000s, never used, in very good condition (typical signs of wear of this model and material given by rubbing with the sheath)
* Available on the market: Difficult to find and not in this configuration
* Sharpening: Professionally sharpened
* Blade marks: Typical wear marks of this model and material, given by rubbing with the sheath
* Signs on handle: None
* Box: -
* Sheath: Present and in excellent condition, Made in USA by SpecOps
* Manuals, Certificates and Guarantees: -
* Controlled and Certified by our in-house laboratoryIntended use: Multi-role
Type of Production: industrial
Blade: Full Tang in Titanium Beta, with micro-balled finish
Country of production USA
Grip: Black G10
Blade length: 130mm.
Blade thickness: 6.3mm.
Total length: 255mm.
Weight: 243g.
Sheath: Made in USA by SpecOps, in coyote colored Nylon, belt, MOLLE compatible, with thermoformed Kydex inner part
Packaging: -
Note: Previously purchased knife, from private collection - iconic product from the early 2000sMTKTI-CP€0.00Only 0 leftOnly 0 leftOut of stock -
ExtremaRatio - T3000 S Testudo - First Series - PRIVATE COLLECTION - Knife
KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Origin: Withdrawn from a private collection, previously purchased
* Condition: Like new, never used and never removed from its original packaging
* Available on the market: Out of production
* Sharpness: Factory sharp
* Marks on blade: None
* Marks on handle: None
* Box: Present
* Sheath: Present
* Manuals, Certificates, and Warranties: Present
* Checked and Certified by our in-house laboratoryIntended use: Tactical/Sport
Type of production: Industrial
Country of production: Italy
Blade: N690Co stainless steel
Finish: Testudo burnishing
Handle: Forprene
Blade length: 128mm.
Blade thickness: 6.3mm.
Total length: 258mm.
Balance: rearward
Weight: 253g.
Sheath: Gen.1, ABS, with Tek-Lok multi-position attachment
Packaging: cardboard box with Extrema Ratio logos
Notes: from a private collection - 2007 model now out of production (replaced by the T4000 series)ER-T3000S-CP -
ExtremaRatio - Harpoon F Evo - 150pcs Limited Edition - Full Tang N690Co & Black G10 - tactical knife
NEW STRUCTURE: Full Tang
NEW GEOMETRY: Greater Control
NEW HANDLES: Black G10The Harpoon F EVO, limited to only 150 numbered pieces, is the functional evolution of a tried and tested design. It retains the identity of the original Harpoon, but refines its ergonomics, structure, and balance for real and continuous use.
The full tang construction, G10 scales, and updated geometry offer greater control and solidity, while the 6.3 mm Böhler N690 blade guarantees reliability, penetration, and cutting precision.
The EVO finish completes a knife designed for operational use, advanced survival, and knowledgeable collectors.
Intended use: Tactical / CollectibleType of production: Industrial
Country of production: Italy
Blade: full tang in N690Co steel
Blade treatment: Anti-reflective burnishing with EVO finish
Handle: Black G10 with CNC machining
Blade length: 209 mm.
Blade thickness: 6.3 mm.
Total length: 340 mm.
Weight: 442 g.
Sheath: Thigh sheath, reinforced Cordura
Packaging: Cardboard box with Extrema Ratio logos and Limited Edition plaque with progressive knife numbering
Notes: Limited edition, numbered to only 150 pieces worldwideER-HARPF-EVOLTD -
ExtremaRatio - Ontos - Black N690Co & Forprene - USED / PRIVATE COLLECTION - knife
KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Origin: Withdrawn from a private collection, previously purchased and used
* Condition: Overall in good condition, with superficial cosmetic marks on the blade due to actual use, which in no way compromise its functionality and use
* Available on the market: On the market
* Sharpening: Resharpened
* Marks on blade: Several superficial cosmetic marks on the burnishing
* Marks on handle: None
* Box: Present and complete
* Sheath: Present and in excellent condition
* Manuals, certificates, and warranties: Present
* Checked and certified by our in-house laboratory
Born from the growing demand of demanding professionals, Extrema Ratio presents ONTOS—a field knife designed to tackle any challenge. The name, derived from the Greek word for “the thing,” represents the perfect synthesis of strength, versatility, and reliability. Compact but extremely durable, ONTOS is the ideal companion in any situation, thanks to its partially serrated blade that always guarantees a sharp, ready-to-use cut.Its nylon thigh sheath, equipped with the MOLLE system, is designed to remain firmly anchored even in the most difficult conditions, when the soldier is forced to give up his primary tactical equipment. And for those looking for an extra level of preparedness, a survival kit is available, sold separately, to be attached directly to the knife sheath.
Intended use: Heavy UtilityType of production: Industrial
Country of production: Italy
Blade: N690Co 58HRC stainless steel
Surface treatment: MIL-C-13924 burnishing
Handle: Forprene
Blade length: 168mm.
Blade thickness: 6.3mm.
Total length: 299 mm.
Balance: advanced
Weight: 411 g.
Sheath: nylon thigh sheath, modular, compatible with M.O.L.L.E. systems.
Packaging: Cardboard box with Extrema Ratio logos
Notes: knife previously purchased and used, from a private collectionER-ONB-CP -
ExtremaRatio - Ontos Knife - Black N690Co & Forprene - knife
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: -ER-ONB -
ExtremaRatio - Giant Mamba Knife - Black - USED - tactical knife
KNIFE WITHDRAWN FROM A PRIVATE COLLECTION
* Origin: Withdrawn from a private individual, previously purchased
* Condition: USED
* Commercially available: available
* Sharpening: resharpened by our internal laboratory
* Signs on the blade: has superficial scratches on the entire blade on both sides of the blade (visible in the photos) which do not compromise the quality but only the aesthetics
* Signs on the handle: None
* Box: YES
* Sheath: Yes
* Manuals, Certificates and Guarantees: Yes
* Checked and Certified by our internal laboratoryThe Giant Mamba has a tanto blade in Böhler N690 steel, 6.3 mm thick with a hardness of 58 HRC, flat edge and full-length lightening fuller.
The Forprene handle with threaded tang lock makes the knife solid and well-balanced. The sheath, M.O.L.L.E. compatible, is made of shock-absorbing nylon with a conical guide for quick insertion and extraction and a system that prevents shaking noises, it is equipped with a two-button safety flap, a thigh with anti-rotation rubber reinforcement and an ambidextrous reversible safety: simply pressing the trigger unlocks the blade.
Intended use: Tactical / Multi-role
Type of production: Industrial
Country of production: Italy
Blade: 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
Notes: -AP-ER-GMA-BK -
ExtremaRatio - KH Satin - Kukri Machete - knife
A well-motivated classic. The "kukri," the Nepalese multi-purpose tool made famous by Rgt. Gurka, in the service of His Britannic Majesty and derived from ancient Greek falcate swords.
The blade of this machete has differentiated roundings. Near the handle the blade is razor rounded so that a narrow sharpening angle can be achieved without unduly affecting the thickness of the back material, which must remain solid. The rounding at the end of the blade, on the other hand, is flat and well angled so as to effortlessly penetrate wood and vegetation.
Usually these kinds of tools are made of soft steel to be more elastic and more easily resharpened. Extrema Ratio has succeeded in obtaining an elastic tool with a decidedly long-lived and durable sharpening by using instead a hard steel such as BÖHLER N690. This machete comes with a thigh scabbard with black Cordura storage pocket and safety carry strap.
Intended Use: Tactical/Military
Blade: N690Co 58HRC stainless steel
Handle: Kraton
Blade length: 340mm.
Blade thickness: 6.3mm.
Blade finish: satin finish
Total length: 493mm.
Balance: advanced
Weight: 650g.
Sheath: Tactical, Nylon, thigh-highER-KH-SAT -
ExtremaRatio - Bayonet O.D. Green Civile NFG Fulcrum knife - Testudo - knife
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 couplingsER-FBN-GR -
ExtremaRatio - Selvan Heavy Utility Survival Knife in San Mai V-TOKU2 - Limited Edition - knife
Japanese steel blends with Italian excellence
For this 2020 collaboration, exclusive of Collini Cutlery, we have decided to propose a series of best sellers produced by Extrema Ratio. Knives made with the famous San Mai steel produced by Japanese Takefu Steel. Specifically, we used V-Toku2 carbonaceous at 62 / 63HRC for the central plate and SUS410 stainless steel for the two external plates, in order to guarantee a very high cutting capacity, penetration and sealing of the wire together with an easy regrinding. and maintenance but at the same time the blade has a remarkable resistance to corrosion and an important increase in resilience given by the type of external steel and by the laminated structure.
Selvan model: for this First Production Run a run of 5 pieces numbered from 1 to 5 was created.The Selvans was born from the collaboration between Extrema Ratio and FISSS (Italian Federation of Sports and Experimental Survival). The project consists of modifying the Ontos, a military survival knife, to accentuate and maximize the performance of the knife as a hiking tool.
The handle has been lengthened and the blade weighted to favor the effectiveness of the cutting strokes and to make more use of the inertia of the stroke.
Intended use: Heavy Utility
Type of production: Industrial
Production Lama: Italy
Blade: integral, laminated Japanese steel (San Mai) with V-Toku2 (carbonaceous) cutting edge at 62 / 63HRC and SUS410 (stainless steel) external scales
Blade treatment: Testudo
Handle: Forprene
Blade length: 15.5mm.
Blade thickness: 6.3mm.
Total length: 310mm.
Thick when closed: -
Balancing: advanced
Weight: 424g.
Sheath: nylon, MOLLE compatible
Packaging: Cardboard box with Extrema Ratio logos
Notes: Numbered edition - cardboard box with Extremaratio logos and certificate - being the cutting edge in carbon steel it is advisable, in order to keep the blade in perfect condition, to protect the edge with a light surface of oil.As in the ancient Japanese Samurai swords.
The rolled steel - imported into Italy by Collini Steel directly from the Japanese Takefu Steel - is based on the ancient Japanese tradition in the creation of the famous Samurai swords. In fact, as early as 1100 the expert Japanese blacksmiths combined different materials together to give the Katana swords incredible cutting capabilities combined with a resistance and flexibility previously unknown. It is thanks to this revolutionary construction technique that Samurai swords have been preserved to this day, becoming one of the most fascinating objects made by man. Following this tradition applied to modern metallurgy, today we are able to have technologically advanced steels already tested and used in cutlery also by famous brands such as Fallkniven, Cold Steel, Mcusta, Kai, Sog, Zwilling, Rockstead, etc.
Characteristics of San Mai steel: These are different types of metals bonded together to create a composite that encloses and intensifies the strengths of the metals individually taken:
- Longer tool life
thanks to the use of very high quality steels with high carbon content (VG10, CoS, Shiro) or sintered (SPG2), in the heart of the sheet (Core Steel), the blade, once hardened, achieves decidedly hardness and cutting performance higher than those achieved with the use of traditional steels.- Greater resilience
built on the principle of Japanese swords, multilayer steel is difficult to break thanks to the toughness of the central steel (Core Steel) and the elasticity of the steel used for the side facing (Stainless Steel).- Better corrosion resistance
the steel used for the external layers (Stainless Steel) guarantees the blade a high resistance to corrosion. The combination of the two or more materials used by Takefu Steel generates, on a galvanic level, a structure that improves corrosion resistance even on the wire.- Easy processing even after heat treatment
although steel normally becomes harder after quenching, the lateral steel used in multilayer processing does not lose its softness and allows easy processing, drilling or welding even after heat treatment. For an optimal performance of the blade, cryogenic treatment is recommended.- Improvement of the aesthetic result
The knives made with multi-state steel or with a damask pattern at the end of the processing are aesthetically elegant, refined and highly appreciated by collectors all over the world.For more information: collinisteel
ER-SEL-VT -
ExtremaRatio - Giant Mamba - HCS - tactical knife
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 / MultiroleType 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: -ER-GMA-HC -
ExtremaRatio - Giant Mamba - Ranger Green - tactical knife
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 / MultiroleType 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: -ER-GMA-RG -
ExtremaRatio - Fulcrum C Satin knife in San Mai V-TOKU2 - Limited Edition - knife
Japanese steel merges with Italian excellence
For this 2019/2020 collaboration, exclusive to Collini Cutlery, we have decided to offer a series of best sellers produced by Extrema Ratio. Knives made with the famous San Mai steel produced by the Japanese Takefu Steel. Specifically, for the central sheet we used the carbonaceous V-Toku2 at 62 / 63HRC and the stainless SUS410 for the two external sheets, in order to guarantee a very high cutting, penetration and sealing capacity of the wire together with an ease of regrinding and maintenance but at the same time the blade has a remarkable resistance to corrosion and an important increase in resilience given by the type of foreign steel and the laminated structure.
FULCRUM C model: for this First Production Run, a circulation of 10 pieces numbered from 1 to 10 was produced.
FULCRUM C is the compact version of FULCRUM, it maintains all the characteristics of solidity and robustness and, thanks to the reduced dimensions of the blade (only 110 mm) and the handle, it is easily portable and concealable. The rigid sheath can be positioned horizontally, vertically or in a 45 ° inclined position. The only safety of the sheath is automatic with extraction and re-insertion by pressure, this detail makes it an intuitive and extremely fast tool, particularly suitable for emergency use and for personal defense.
Use: backup knife
Blade: integral, in Japanese laminated steel (San Mai) with cutting edge in V-Toku2 (carbon) at 62 / 63HRC and external cheeks in SUS410 (stainless steel)
Blade thickness: 6.3 mm.
Blade length: 90 mm.
Total length: 210 mm.
Balancing: set back to 0.5cm. from the guard branch
Weight: 210g.
Sheath: ABS with Tek-Lok multiposition attachment
Notes: Numbered edition - cardboard box with Extremaratio logos and certificateAs in the ancient swords of the Japanese Samurai.
Rolled steel - imported into Italy from Collini Steel directly from the Japanese Takefu Steel - is based on the ancient Japanese tradition in the creation of the famous Samurai swords. Already in 1100 the expert Japanese blacksmiths in fact combined different materials to give the Katana swords incredible cutting capabilities combined with a resistance and flexibility previously unknown. It is thanks to this revolutionary construction technique that the swords from Samurai have been preserved to the present day becoming one of the most fascinating objects made by man. Following this tradition applied to modern metallurgy, we are now able to have technologically advanced steels already tested and used in cutlery also by famous brands such as Fallkniven, Cold Steel, Mcusta, Kai, Sog, Zwilling, Rockstead, etc.
Characteristics of San Mai steel: These are different types of metals bonded together to create a composite that encloses and intensifies the strengths of the metals taken individually:
- Longer tool life
thanks to the use of high quality steel with a high carbon content (V-Toku2, VG10, CoS, Shiro) or sintered (SPG2), in the heart of the sheet (Core Steel), the blade once hardened, reaches hardness and cutting performance significantly higher than that achieved with the use of traditional steels.- Greater resilience
built with the principle of Japanese swords, multilayer steel is difficult to break thanks to the toughness of the central steel (Core Steel) and the elasticity of the steel used for the lateral coating (Stainless Steel).- Better corrosion resistance
the steel used for the external layers (Stainless Steel) guarantees the blade a high resistance to corrosion. The combination of the two or more materials used by Takefu Steel generates, at the galvanic level, a structure that improves the corrosion resistance also on the wire.- Easy processing even after heat treatment
although normally the steel becomes harder after hardening, the lateral steel used in multi-layer processing does not lose its softness and allows easy processing, drilling or welding even after heat treatment. For optimum performance of the blade, cryogenic treatment is recommended.- Improvement of the aesthetic result
The knives made with multistate steel or with damask pattern at the end of the processing are aesthetically elegant, refined and highly appreciated by collectors all over the world.ERCC-P-F-VT2 -
ExtremaRatio - Fulcrum Bayonet NFG Black - Knife
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 KydexER-FBN-BK -
Ontario Knife Company - RD Tanto Ranger Micarta - 8677 - knife
Intended use: Tactical / Military
Type of production: Industrial
Country of production: USA
Blade: full tang in 5160 carbon steel
Blade treatment: powder coating
Handle: micarta
Blade length: 175mm.
Blade thickness: 6.3mm.
Total length: 305mm.
Balancing: slightly advanced
Weight: 522g.
Sheath: nylon, M.O.L.L.E compatible, rigid polypropylene insert
Packaging: Cardboard box with OKC logos
Note: -ON8677 -
Tops - El Chete Machete by Leo Espinoza - ELCH - knife
Intended use: Heavy Utility
Type of production: Semi-Industrial
Country of production: USA
Blade: full tang in steel 1095 56 / 58HRC
Blade treatment: Acid Rain
Handle: Green and Black Canvas Micarta
Blade length: 305mm.
Blade thickness: 6.4mm.
Total length: 445mm.
Balancing: Advanced
Weight: 835g.
Sheath: Kydex, with leather belt loop
Packaging: Transparent plastic bag
Notes: Emergency whistle - Design by Leo EspinozaTO-ELCH02 -
Wander Tactical - Lynx - Tanto Special Edition - Raw and Dark Brown Micarta - knife
Type of production: handmade
Production Country: Italy
Blade: D2 steel 59 / 60HRC
Treatment: Raw
Handle: Micarta
Blade length: 100mm.
Blade thickness: 6.5mm.
Overall length: 220mm.
Balancing: backward
Weight: 338g.
Sheath: Kydex, thermoformed, with Tek-Lok attack
Packaging: -
Notes: Each knife is unique and handmade; there may be slightly different from the one shown in the picturesWT-LY-TSP -
Boker - Magnum Collection 2017 - Limited Edition - 02MAG2017 - knife
Purpose: Collection / Sportsman
Type of production: Industrial
Country of Origin: Taiwan
Blade: 440C steel
Blade treatment: satin finish
Handle: rayskin and cotton
Blade Length: 235mm.
Blade thickness: 6.5mm.
Total Length: 375mm.
Weight: 527g.
Sheath: in leather
Packing: gift box with guarantee certificate and microfibre cloth for cleaning
Notes: Limited edition number edition in 1999 - Design by Wally HayesBO-02MAG2017 -
ExtremaRatio - 185 ° RAO in Sanmai Japanese steel - knife
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.
Limited Edition RAO model characterized by a satin blade in Japanese rolled steel produced by Takefu Steel. to the central plate and the 420J2 (56 HRC) In the specific CoS it is used to 61,5HRC (Cobalt Special deemed superior mechanically by 25% compared to the already appreciated VG10) for the two side plates, in order to have a very high capacity cutting but at the same time a remarkable resilience and resistance to oxidation.
folding knife made upon specific requests of the Italian Department of the Army 185th RAO (Regiment Acquisition Objectives) and currently supplied to the homonymous department. The knife supplied differs from that only civil to the total lack of written or logos on the blade.
Intended Use: Military / TacticalType of production: Industrial
Production Lama: Italy
Blade: (San Mai) Japanese-rolled stainless steel with sharp CoS to 61,5HRC in cryogenic tempering
Lama Treatment: Testudo
Handle material: anticorodal 4.5mm
Blade length: 118mm.
Blade Thickness: 6.3mm.
Length closed: 142
Overall length: 261mm.
Balancing: -
Weight: 335g.
Closure: front modified lock - threaded safety pin
Clip: -
Sheath: tactical nylon by Vega with M.O.L.L.E. attacks suitable for both the closed knife that open - color BLACK
Notes: sharpening the included DiamondRAO-SANMAI -
ExtremaRatio - N.K.3 Karambit Stone Washed - Neck Knife - NK3K - knife
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)ER-NK3K-SW -
Wander Tactical - Lynx Tanto Knife - Black Blood & Black Micarta - custom knife
The Lynx is designed to satisfy all users in the 'scope of the Hunt, the Bushcraft and Survival. Thickness and dimensions have been studied to facilitate precision work and at the same time be reliable even for heavy work. Handy and compact, it is the perfect companion for the outdoors.
Type of production: Artisan
Lama production: Italy
Blade: in steel D2 at 59 / 60HRC
Lama treatment: Black Blood
Handle: Micarta
Blade length: 105mm.
Blade thickness: 6.5mm.
Total length: 230mm.
Balancing: set back
Weight: 288g.
Sheath: Kydex, thermoformed, with Tek-Lok type connection
Package: -
Notes: Each knife is unique and handcrafted; there may be slight differences in finishes, colors and materials compared to the photographed product.12627 -
Wander Tactical - Lynx Compound - Iron Washed & Micarta Desert - custom knife
The Lynx is designed to satisfy all users in the 'scope of the Hunt, the Bushcraft and Survival. Thickness and dimensions have been studied to facilitate precision work and at the same time be reliable even for heavy work. Handy and compact, it is the perfect companion for the outdoors.
Type of production: Artisan
Lama production: Italy
Blade: in steel D2 at 59 / 60HRC
Blade treatment: GunKote
Handle: Micarta
Blade length: 105mm.
Blade thickness: 6.5mm.
Total length: 235mm.
Balancing: set back
Weight: 338g.
Sheath: in leather
Package: -
Notes: Each knife is unique and handcrafted; there may be slight differences in finishes, colors and materials compared to the photographed product.12528 -
ExtremaRatio - Fulcrum Civil Bayonet Knife NFG Black - USED - PRIVATE COLLECTION - Knife
KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Origin: Collected from a private individual, previously purchased and used.
* Condition: Used, with obvious cosmetic signs of wear and tear, in no way compromising its use
* Commercially available: Discontinued, demilitarized version, without attachments and with top sharpening removed
* Sharpening: Factory (can be improved)
* Marks on blade: Various signs of wear, cosmetic in nature.
* Marks on handle: Various signs of wear, cosmetic in nature.
* Box: Present, original, complete
* Scabbard: Present, original, used, in good condition.
* Manuals, Certificates and Warranties: Present
* Checked and Certified by our in-house laboratoryIntended use: tactical/military/multi-role
Blade: full tang in N690Co 58HRC stainless steel with front upper portion of blade NOT sharpened
Handle: detachable in Forprene
Blade length: 180mm.
Blade thickness: 6.3mm.
Total length: 310mm.
Balance: advanced, 1.5cm from the lower guard branch
Weight: 378g.
Sheath: modular tactical with thread cutter, thigh or belt, Nylon - includes diamond sharpener and magnesium fire starterSheath: modular tactical with thread cutter, thigh or belt, Nylon - includes a diamond sharpener and magnesium fire starter
ER-FUBB-US -
ExtremaRatio - Fulcrum Nibbio - Italian Army - Testudo - knife
Knife distributed in 2000 pieces to the Alpine Body of the Italian Army as part of the "Nibbio" operation in Afghanistan
Target for use: tactical / military / multiruolo
Blade: full tang in stainless steel N690Co 58HRC
Manicure: Removable in Forprene
Blade Length: 180mm.
Blade thickness: 6.3mm.
Closed length: -
Total Length: 310mm.
Balancing: advanced, 1.5 cm from the lower guard branch
Weight: 325g.
Closure: -
Clip: -
Sheath: modular tactical, thigh or belt, in Nylon and Kydex
Notes: -ER-FUL-EI -
Strider Knives - DB-L Tiger Stripe Black G10 - coltello
Destinazione d'uso: Tattico
Tipo di produzione: Semi-Artigianale
Produzione Lama: USA
Lama: In acciaio inox CPM-S30V
Trattamento Lama: Tiger Stripe
Manicatura: G-10
Lunghezza lama: 100mm.
Spessore lama: 6.3mm.
Lunghezza chiuso: -
Lunghezza totale: 210mm.
Spessore da chiuso: -
Bilanciatura: -
Peso: 230g.
Chiusura: -
Clip: -
Fodero: in Kydex
Confezione: -
Note: -7825 -
Strider Knives - WB Fixed Blade Tanto Green Paracord - coltello
La Coltelleria Collini è distributore ufficiale per l’Italia dei coltelli tattici made in USA Strider Knives
Destinazione d'uso: Tattico / Collezione
Tipo di produzione: Semi-Artigianale
Produzione Lama: USA
Lama: In acciaio inox CPM-S30V
Trattamento Lama: Tiger Stripe
Manicatura: Paracord
Lunghezza lama: 133mm.
Spessore lama: 6.3mm.
Lunghezza totale: 259mm.
Peso: 286g.
Fodero: Verde, in Cordura
Confezione: -
Note: -7808



























































