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Anno 2019
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ExtremaRatio - Police I knife - Multi-purpose 2 blades - PRIVATE COLLECTION - knife
KNIFE RETIRED FROM PRIVATE COLLECTION
* Type: Previously Purchased
* Condition: In very good condition
* Commercially available NO
* Sharpness: Original
* Marks on blade: NO
* Marks on handle: NO
* Packaging: YES
* Checked and Certified by our internal laboratoryType of production: Industrial
Country of production: Italy
Blade: in N690Co stainless steel
Finish: Testudo burnishing
Handle: Anodized aeronautical aluminum anticorodal
Blade length: 85mm.
Blade thickness: 2.5mm.
Total length: 210mm.
Weight: 152g.
Sheath: -
Packaging: Cardboard box with Extrema Ratio logos and manufacturer's certificates
Notes: emergency blade with snap opening (length. 8 cm) - glass breaker - model from 2013 now out of productionER-AP-POLICE€258.20Only 1 leftOnly 1 left
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ExtremaRatio - Resolza 10 - Black - pattada knife
RESOLZA, a term of ancient origin, is today one of the most famous traditional knives of our country. The name suggests the razor by chance.
It was born in Sardinia centuries ago and has accompanied its inhabitants until today in the daily work of a peasant and pastoral life, following them even when its men were called to war. The chronicles of the Sassari Brigade during the First World War cite this knife among its soldiers' equipment.
We wanted to make a tribute by revisiting it according to our canons, without wanting to hurt any of the prestigious Sardinian artisans who still today pass on the tradition and wisdom of their ancestors. The dimensions and proportions are the original ones of a 10 cm blade, but the materials and technologies are those of our production. The handle revised in our style, the blade most faithful to tradition. In addition to the original, it has the blade lock open.
Intended use: sports
Type of production: industrial
Country of production: Italy
Blade: stainless steel N690Co 58HRC
Handle: Anticorodal
Blade length: 100mm.
Blade thickness: 3mm.
Total length: 220mm.
Weight: 65g.
Closure: Liner Lock
Clip: -
Sheath: -
Notes: blade with MIL-C 13924 burnishingER-RE10-BK€159.02Only 1 leftOnly 1 left -
ExtremaRatio - Resolza 10 - Stone Washed - pattada knife
RESOLZA, a term of ancient origin, is today one of the most famous traditional knives of our country. The name suggests the razor by chance.
It was born in Sardinia centuries ago and has accompanied its inhabitants until today in the daily work of a peasant and pastoral life, following them even when its men were called to war. The chronicles of the Sassari Brigade during the First World War cite this knife among its soldiers' equipment.
We wanted to make a tribute by revisiting it according to our canons, without wanting to hurt any of the prestigious Sardinian artisans who still today pass on the tradition and wisdom of their ancestors. The dimensions and proportions are the original ones of a 10 cm blade, but the materials and technologies are those of our production. The handle revised in our style, the blade most faithful to tradition. In addition to the original, it has the blade lock open.
Intended use: sports
Type of production: industrial
Country of production: Italy
Blade: stainless steel N690Co 58HRC
Handle: Anticorodal
Blade length: 100mm.
Blade thickness: 3mm.
Total length: 220mm.
Weight: 65g.
Closure: Liner Lock
Clip: -
Sheath: -
Notes: blade with stonewashed treatmentER-RE10-SW€154.92Only 0 leftOnly 0 left -
ExtremaRatio - Contact Ranger Green Knife Stone Washed - tactical knife
Intended use: Tactical / Multirole
Type of production: Industrial
Country of production: Italy
Blade: stainless steel N690Co 58HRC
Blade treatment: Stone Washed
Handle: Forprene
Blade length: 162mm.
Blade thickness: 6.3mm.
Total length: 293mm.
Weight: 300g.
Sheath: in Nylon
Packaging: Cardboard box with Extrema Ratio logos
Note: -Extrema Ratio developed the first knife of a new production line, called CONTACT.
It has a blade with a lance-shaped profile, a flat grinding and a diamond-shaped geometry. It has got a lower guard branch to protect itself from incidental cuts, upper jumping to improve grip, concave fuller along the length of the blade and a generous thickness blade (6.30mm) the now famous Requiem, revisited in proportions and in some technical features. The first of a new line of multipurpose knives.
The blade is made in Böhler N690 steel with a hardness of 58 HRC and a chemical burnishing coating for the Black version. All other colors in production have got a blade with Stone Washed finishing. The handle is still in forprene. It is more assembled by the side screws but thanks to the shank in truncated cone-shaped stainless steel that is screwed to the bottom and goes to fit inside a special seat, which makes it solid. In this way the knife is well balanced. The sheath is minimalist; most of the fabric has been cut off; it has got a 2nd level retention system, remembering the style of the model it was inspired by.
The main shell is injection-molded in shockproof nylon. The secondary retention system is reversible for ambidextrous users. The blade is guided through the conception of the blade. To extract the blade, to pressure the trigger will be sufficient, thus releasing the safety that holds securely in the sheath. In the horizontal slits of the sheath of a system, which fixes the blade to avoid shaking noises when it is stored inside. The back side of the nylon sheath is M.O.L.L.E. compatible.
The textile part is reduced to its minimum and has got the classic two-button safety strap with a belt loop Extrema Ratio aims to reduce the size of the knife, but not saving on the structural strength and safety accessories.
so be used as glass breakers
ER-CON-RG€226.23Only 1 leftOnly 1 left -
ExtremaRatio - Contact Wolf Gray Knife Stone Washed - tactical knife
Intended use: Tactical / Multirole
Type of production: Industrial
Country of production: Italy
Blade: stainless steel N690Co 58HRC
Blade treatment: Stone Washed
Handle: Forprene
Blade length: 162mm.
Blade thickness: 6.3mm.
Total length: 293mm.
Weight: 300g.
Sheath: in Nylon
Packaging: Cardboard box with Extrema Ratio logos
Note: -Extrema Ratio developed the first knife of a new production line, called CONTACT.
It has a blade with a lance-shaped profile, a flat grinding and a diamond-shaped geometry. It has got a lower guard branch to protect itself from incidental cuts, upper jumping to improve grip, concave fuller along the length of the blade and a generous thickness blade (6.30mm) the now famous Requiem, revisited in proportions and in some technical features. The first of a new line of multipurpose knives.
The blade is made in Böhler N690 steel with a hardness of 58 HRC and a chemical burnishing coating for the Black version. All other colors in production have got a blade with Stone Washed finishing. The handle is still in forprene. It is more assembled by the side screws but thanks to the shank in truncated cone-shaped stainless steel that is screwed to the bottom and goes to fit inside a special seat, which makes it solid. In this way the knife is well balanced. The sheath is minimalist; most of the fabric has been cut off; it has got a 2nd level retention system, remembering the style of the model it was inspired by.
The main shell is injection-molded in shockproof nylon. The secondary retention system is reversible for ambidextrous users. The blade is guided through the conception of the blade. To extract the blade, to pressure the trigger will be sufficient, thus releasing the safety that holds securely in the sheath. In the horizontal slits of the sheath of a system, which fixes the blade to avoid shaking noises when it is stored inside. The back side of the nylon sheath is M.O.L.L.E. compatible.
The textile part is reduced to its minimum and has got the classic two-button safety strap with a belt loop Extrema Ratio aims to reduce the size of the knife, but not saving on the structural strength and safety accessories.
so be used as glass breakers
ER-CON-WG€226.23Only 1 leftOnly 1 left -
ExtremaRatio - Silente Knife Black - NOCS State Police - knife with multi-purpose pliers
SILENTE is the name of the knife taken from the motto "SICUT NOX SILENTES" by N.O.C.S. Central Security Operations Unit, special anti-terrorist unit of the State Police.
SILENTE was presented to the Department, the Authorities, the Minister of the Interior and the Chief of Police on the occasion of the forty-year ceremony of the foundation of the NOCS.
SILENTE is a unique model of its kind that fulfills equally unique needs: the handle is divided into two parts and creates the handle of a clamp placed in the end of the handle. With it, in addition to taking on everything that has the appropriate dimensions, it is possible to cut wire, wire, steel cables, etc. and last but not least, it can be used as a window breaker, given the tungsten carbide insert at the end.
The sheath protects the cutting edge during all these uses, allowing it to be used safely, but it can also release the blade with a fast and silent retention system. Adaptable to thigh use and applicable to the M.O.L.L.E system, it is integrated into the operator's equipment using the least possible space.
Intended use: Tactical / MultiroleType of production: Industrial
Country of production: Italy
Blade: stainless steel N690Co 58HRC
Blade treatment: Brunishing Mil-C-13924
Handle: Forprene
Blade length: 163mm.
Blade thickness: 6.3mm.
Total length: 309mm.
Weight: 338g.
Sheath: in Nylon
Packaging: Cardboard box with Extrema Ratio logos
Notes: a multi-purpose pliers are integrated in the handle for cutting reticulated and cables or can also be used as glass breakersER-SILENTE€440.16Only 99 leftOnly 99 left -
ExtremaRatio - Nimbus Special - Collector's Edition - Knife
Born from the revisitation of the 39-09 model, the Nimbus was developed and chosen by the 183rd "Nembo" Paratrooper Regiment as a commemorative knife of the events of Case Grizzano which on 19 April 1945 saw the Nembo paratroopers engaged against the paratroopers of a German division . The clashes raged for 12 hours and were often resolved by hand-to-hand combat with the white weapon. A few days after the end of the Second World War one third of the battalion's men remained on the field, but their sacrifice led to the conquest of the battle. The knife in addition to wanting to commemorate an important event of our Armed Forces is the result of a development that has been carefully studied also in the technical aspects, so as to make it suitable for a concrete operational use.
Particular attention has been paid to taking care of the dimensions, the shape and the search for solutions such as the kydex sheath, which is designed to make the knife an instrument capable of adapting to the most complex requirements of the port.
The light and compact blade meets the demands of a modern tactical knife today.
Intended use: Collection
Type of production: Industrial
Country of production: Italy
Blade: stainless steel N690Co 58HRC
Blade treatment: Satin finish
Handle: Wood
Blade length: 141mm.
Blade thickness: 5mm.
Total length: 263mm.
Weight: 203g.
Sheath: in Leather
Packaging: display case
Notes: -ER-NIM-SP€613.93Only 1 leftOnly 1 left -
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€395.08Only 99 leftOnly 99 left -
ExtremaRatio - Nimbus Black Ordinanza - Knife
Born from the revisitation of the 39-09 model, the Nimbus was developed and chosen by the 183rd "Nembo" Paratrooper Regiment as a commemorative knife of the events of Case Grizzano which on 19 April 1945 saw the Nembo paratroopers engaged against the paratroopers of a German division . The clashes raged for 12 hours and were often resolved by hand-to-hand combat with the white weapon. A few days after the end of the Second World War one third of the battalion's men remained on the field, but their sacrifice led to the conquest of the battle. The knife in addition to wanting to commemorate an important event of our Armed Forces is the result of a development that has been carefully studied also in the technical aspects, so as to make it suitable for a concrete operational use.
Particular attention has been paid to taking care of the dimensions, the shape and the search for solutions such as the kydex sheath, which is designed to make the knife an instrument capable of adapting to the most complex requirements of the port.
The light and compact blade meets the demands of a modern tactical knife today.
Intended use: Tactical / CQC
Type of production: Industrial
Country of production: Italy
Blade: stainless steel N690Co 58HRC
Blade treatment: Brunishing Mil-C-13924
Handle: Forprene
Blade length: 141mm.
Blade thickness: 5mm.
Total length: 263mm.
Weight: 203g.
Sheath: in Kydex
Packaging: ABS suitcase with 183rd Parachute Regiment logos "Nembo"
Note: -ER-NIM-OR€313.11Only 1 leftOnly 1 left -
ExtremaRatio - Nimbus Black Operative - knife
Born from the revisitation of the 39-09 model, the Nimbus was developed and chosen by the 183rd "Nembo" Paratrooper Regiment as a commemorative knife of the events of Case Grizzano which on 19 April 1945 saw the Nembo paratroopers engaged against the paratroopers of a German division . The clashes raged for 12 hours and were often resolved by hand-to-hand combat with the white weapon. A few days after the end of the Second World War one third of the battalion's men remained on the field, but their sacrifice led to the conquest of the battle. The knife in addition to wanting to commemorate an important event of our Armed Forces is the result of a development that has been carefully studied also in the technical aspects, so as to make it suitable for a concrete operational use.
Particular attention has been paid to taking care of the dimensions, the shape and the search for solutions such as the kydex sheath, which is designed to make the knife an instrument capable of adapting to the most complex requirements of the port.
The light and compact blade meets the demands of a modern tactical knife today.
Intended use: Tactical / CQC
Type of production: Industrial
Country of production: Italy
Blade: stainless steel N690Co 58HRC
Blade treatment: Brunishing Mil-C-13924
Handle: Forprene
Blade length: 141mm.
Blade thickness: 5mm.
Total length: 263mm.
Weight: 203g.
Sheath: in Kydex
Packaging: Cardboard box with Extrema Ratio logos
Note: -ER-NIM-OP€259.84Only 1 leftOnly 1 left -
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€354.10Only 1 leftOnly 1 left -
ExtremaRatio - Fulcrum Bayonet knife NFG Desert SW - knife
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: -ER-FBN-DE€269.67Only 99 leftOnly 99 leftOut of stock -
ExtremaRatio - BD2 Lucky Desert knife - knife
Intended use: Tactical
Type of production: Industrial
Lama production: Italy
Blade: N690Co 58HRC stainless steel
Lama treatment: Satin
Handle: Anticorodal
Blade length: 95mm.
Blade thickness: 3mm.
Length closed: 128mm.
Total length: 224mm.
Thick when closed: 17mm.
Balancing: -
Weight: 104g.
Closure: Liner Lock
Clip: removable in stainless steel
Sheath: -
Packaging: cardboard box with Extrema Ratio logos
Note: -ER-BD2-DE€147.54Only 1 leftOnly 1 left -
ExtremaRatio - MF2 Rough knife - folding knife
Intended use: Tactical / Fighter
Type of production: Industrial
Lama production: Italy
Blade: Stainless steel N690Co 58HRC
Blade treatment: Testudo
Handle: Rough Anticorodal
Blade length: 115mm.
Blade thickness: 4mm.
Length closed: 155mm.
Total length: 263mm.
Thick when closed: 24mm.
Balancing: -
Weight: 195g.
Closure: Liner Lock
Clip: Stainless Steel
Sheath: -
Packaging: black cardboard box with Extrema Ratio logos
Note: -4352R€307.38Only 98 leftOnly 98 left -
ExtremaRatio - Lamborghini Reventón knife - Limited Edition - PRIVATE COLLECTION - knife
Reventon knife, no longer in production for years and limited to 2000 pieces, withdrawn from a private collection globally in excellent condition - Complete with everything, plastic box and certificates. Checked and certified by our internal laboratory.
Extrema Ratio was chosen by Automobili Lamborghini to produce the Reventón Folder, an emergency knife, belt cutter and glass breaker, designed by the Lamborghini Style Center, which becomes the official equipment of each of the 20 Reventón produced, the most exclusive supercar of the House of Bull.
The "Reventón Folder" is an accessory of the highest functional and aesthetic level, clearly in line with the philosophy of the car built with concepts and technologies directly borrowed from the most advanced aviation industry.
The knife is produced in a limited edition of 2,000 pieces, the first twenty equip the Reventón, the other 1980 pieces will be available for collectors.
Intended use: Collection
Type of production: Industrial
Production Lama: Italy
Blade: N690Co 58HRC stainless steel
Blade treatment: Testudo
Handle: Anticorodal
Blade length: 120mm.
Blade thickness: 6.3mm.
Closed length: 155mm.
Total length: 260mm.
Thick when closed: 21mm.
Balancing: -
Weight: 235g.
Closure: Back Lock with safety catch
Clip: -
Sheath: -
Packaging: plastic box with Lamborghini and Reventon logos
Notes: Specimen number 297 out of 2000, unique piece at our disposalAP-REV-ER€0.00Only -50 leftOnly -50 leftOut of stock -
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€0.00Only -50 leftOnly -50 leftOut of stock -
ExtremaRatio - Shrapnel OG Satin - 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.
SHRAPNEL OG model: for this First Production Run, a circulation of 10 pieces numbered from 1 to 10 was produced.
SHRAPNEL OG is a truly multi-purpose "back-up", with strong combat attitudes. The leaf blade is characterized by a wide flat winding, with a narrow sharpening angle which makes it particularly sharp. The rigid sheath can be positioned horizontally, vertically or inclined at 45 °. The SHRAPNEL OG is produced without the top guard.
Use: tactical, sports, hiking, collection
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)
Handle: forprene
Blade length: 90mm.
Blade thickness: 6.5mm.
Total length: 210mm.
Balancing: set back to 0.5cm. from the guard branch
Weight: 190g.
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-S-VT2€0.00Only -50 leftOnly -50 leftOut of stock -
ExtremaRatio - BD4 R knife Satin - knife
BD4 R SATIN is a new basic folder with the opening system High Speed Razor Opening System, its blade embodies the classic Italian style, elegant and functional.
Intended use: Sports / Tactical
Type of production: Industrial
Lama production: Italy
Blade: Stainless steel N690Co 58HRC
Lama treatment: Satin
Handle: Anticorodal
Blade length: 122mm.
Blade thickness: 3mm.
Length closed: 150mm.
Total length: 277mm.
Thick when closed: 17mm.
Balancing: -
Weight: 130g.
Closure: Liner Lock
Clip: removable in stainless steel
Sheath: -
Packaging: cardboard box with Extrema Ratio logos
Note: -ER-BD4R-BK€145.08Only -99 leftOnly -99 leftOut of stock -
ExtremaRatio - BF2H Helmsman - Multitool Sailing Knife
Helmsman is a knife designed and perfected in every single detail for its primary use in a nautical environment and represents the evolution of the BF2 V model presented on the Amerigo Vespucci School Ship in 2013 and dedicated to the most beautiful ship in the world.
The blade, which reaches a length of 87 mm, has a serration at the base while the tip has a flat grinding that allows symmetrical cutting work with wider support while the stone washed finishing process preserves more from corrosion in a marine environment.
Intended use: Sports / Tactical / For Sailing Boat
Type of production: industrial
Blade: N690Co 58HRC stainless steel with Stone Washed finish
Country of production: Italy
Handle: Anticorodal with stainless steel reinforcements
Blade length: 87mm.
Blade thickness: 3mm.
Length closed: 124mm.
Total length: 210mm.
Weight: 143g.
Closure: Liner Lock
Clip: reversible and removable in stainless steel
Notes: ankle band / loose knots - small shackle - Tactical quick release hanger - Safety catch with open knife - Safety ankle fastener / Knot releaseER-BF2H€200.82Only 0 leftOnly 0 leftOut of stock -
ExtremaRatio - Contact Desert Knife Stone Washed - tactical knife
Intended use: Tactical / Multirole
Type of production: Industrial
Country of production: Italy
Blade: stainless steel N690Co 58HRC
Blade treatment: Stone Washed
Handle: Forprene
Blade length: 162mm.
Blade thickness: 6.3mm.
Total length: 293mm.
Weight: 300g.
Sheath: in Nylon
Packaging: Cardboard box with Extrema Ratio logos
Note: -Extrema Ratio developed the first knife of a new production line, called CONTACT.
It has a blade with a lance-shaped profile, a flat grinding and a diamond-shaped geometry. It has got a lower guard branch to protect itself from incidental cuts, upper jumping to improve grip, concave fuller along the length of the blade and a generous thickness blade (6.30mm) the now famous Requiem, revisited in proportions and in some technical features. The first of a new line of multipurpose knives.
The blade is made in Böhler N690 steel with a hardness of 58 HRC and a chemical burnishing coating for the Black version. All other colors in production have got a blade with Stone Washed finishing. The handle is still in forprene. It is more assembled by the side screws but thanks to the shank in truncated cone-shaped stainless steel that is screwed to the bottom and goes to fit inside a special seat, which makes it solid. In this way the knife is well balanced. The sheath is minimalist; most of the fabric has been cut off; it has got a 2nd level retention system, remembering the style of the model it was inspired by.
The main shell is injection-molded in shockproof nylon. The secondary retention system is reversible for ambidextrous users. The blade is guided through the conception of the blade. To extract the blade, to pressure the trigger will be sufficient, thus releasing the safety that holds securely in the sheath. In the horizontal slits of the sheath of a system, which fixes the blade to avoid shaking noises when it is stored inside. The back side of the nylon sheath is M.O.L.L.E. compatible.
The textile part is reduced to its minimum and has got the classic two-button safety strap with a belt loop Extrema Ratio aims to reduce the size of the knife, but not saving on the structural strength and safety accessories.
so be used as glass breakers
ER-CONT-DES€226.23Only 0 leftOnly 0 leftOut of stock -
ExtremaRatio - Contact Knife Black - tactical knife
Intended use: Tactical / Multirole
Type of production: Industrial
Country of production: Italy
Blade: stainless steel N690Co 58HRC
Blade treatment: Brunishing Mil-C-13924
Handle: Forprene
Blade length: 162mm.
Blade thickness: 6.3mm.
Total length: 293mm.
Weight: 300g.
Sheath: in Nylon
Packaging: Cardboard box with Extrema Ratio logos
Note: -Extrema Ratio developed the first knife of a new production line, called CONTACT.
It has a blade with a lance-shaped profile, a flat grinding and a diamond-shaped geometry. It has got a lower guard branch to protect itself from incidental cuts, upper jumping to improve grip, concave fuller along the length of the blade and a generous thickness blade (6.30mm) the now famous Requiem, revisited in proportions and in some technical features. The first of a new line of multipurpose knives.
The blade is made in Böhler N690 steel with a hardness of 58 HRC and a chemical burnishing coating for the Black version. All other colors in production have got a blade with Stone Washed finishing. The handle is still in forprene. It is more assembled by the side screws but thanks to the shank in truncated cone-shaped stainless steel that is screwed to the bottom and goes to fit inside a special seat, which makes it solid. In this way the knife is well balanced. The sheath is minimalist; most of the fabric has been cut off; it has got a 2nd level retention system, remembering the style of the model it was inspired by.
The main shell is injection-molded in shockproof nylon. The secondary retention system is reversible for ambidextrous users. The blade is guided through the conception of the blade. To extract the blade, to pressure the trigger will be sufficient, thus releasing the safety that holds securely in the sheath. In the horizontal slits of the sheath of a system, which fixes the blade to avoid shaking noises when it is stored inside. The back side of the nylon sheath is M.O.L.L.E. compatible.
The textile part is reduced to its minimum and has got the classic two-button safety strap with a belt loop Extrema Ratio aims to reduce the size of the knife, but not saving on the structural strength and safety accessories.
so be used as glass breakers
ER-CON-BK€250.82Only 0 leftOnly 0 leftOut of stock -
ExtremaRatio - Police I knife - Multi-purpose 2 blades - knife
Intended use: Emergency and survival multi-purpose knife
Type of production: Industrial
Country of production: Italy
Blade: N690Co stainless steel
Finish: Testudo burnishing
Handle: anticorodal anodized aluminum
Blade length: 85mm.
Blade thickness: 2.5mm.
Total length: 210mm.
Weight: 152g.
Sheath: -
Packaging: Cardboard box with Extrema Ratio logos and manufacturer's certificates
Notes: emergency blade with snap opening (length 8 cm) - window breaker - 2013 model now out of productionER-POLICE€196.72Only -99 leftOnly -99 leftOut of stock -
ExtremaRatio - BD2 R Satin - knife
Medium folding of the BD series. It is produced with an aluminum handle that enhances its resistance and lightness, also thanks to the steel frame. The model maintains all the features of the BD2 updated with the new opening system High Speed Razor Opening ..
Intended use: Sports / EDC
Type of production: Industrial
Lama production: Italy
Blade: Stainless steel N690Co 58HRC
Blade treatment: Satin
Handle: Anticorodal
Blade length: 95mm.
Blade thickness: 3mm.
Length closed: 128mm.
Total length: 224mm.
Thick when closed: 17mm.
Weight: 105g.
Closure: Liner Lock
Clip: removable in stainless steel
Packaging: cardboard box with Extrema Ratio logos
Note: -ER-BD2R-SA€140.98Only -99 leftOnly -99 leftOut of stock -
Extremaratio - Venom Stone Washed Half Serrated - Knife
Dedicated to those who are more at ease with a knife with a more classic profile, the VENOM is characterized by a wide, flat main grind.
Less suitable for combat, it is best expressed in field and precision work (thanks to the lower angle of sharpening).
It is a multirole of great utility in hunting and outdoor sports. The profile and the general outline of the blade are inspired by the Italian and Austro / Hungarian battle blades of the first half of the 20th century.
Intended use: Tactical / SportsType of production: Industrial
Country of production: Italy
Blade: stainless steel N690Co 58HRC
Blade treatment: Stonewashed
Handle: Forprene
Blade length: 180mm.
Blade thickness: 6.3mm.
Total length: 310mm.
Balancing: on the guard branch
Weight: 300g.
Sheath: thigh, in nylon, with rigid polymer insert
Packaging: Cardboard box with Extrema Ratio logos
Note: -ER-VENSW€259.02Only -99 leftOnly -99 leftOut of stock -
ExtremaRatio - BD2 Lucky Black knife - knife
Intended use: Tactical
Type of production: Industrial
Lama production: Italy
Blade: N690Co 58HRC stainless steel
Blade Treatment: MIL-C-13924 Burnishing
Handle: Anticorodal
Blade length: 95mm.
Blade thickness: 3mm.
Length closed: 128mm.
Total length: 224mm.
Thick when closed: 17mm.
Balancing: -
Weight: 104g.
Closure: Liner Lock
Clip: removable in stainless steel
Sheath: -
Packaging: cardboard box with Extrema Ratio logos
Note: -ER-BD2-BK€142.62Only 0 leftOnly 0 leftOut of stock -
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€373.77Out of stock -
ExtremaRatio - RES II - Rescue Emergency Survival - knife
Destination: Coltello multiuso di emergenza e sopravvivenza
Blades: Acciaio inox N690Co a 58 HRC
Handle: Alluminio aeronautico anodizzato anticorodal
Total Length: 260 mm.
Blade Length: 118 mm.
Blade Tickness: 4 mm.
Locking Type: liner lock
Clip: amovibile in acciaio
Weight: 330 g.
Notes: luce led - lama emergenza (lungh. 8 cm) - sega per legno (lungh. 11,5 cm) con terminale a gancio affilato - frangivetro - punte cacciavite4369€323.77Out of stock -
ExtremaRatio - MF3T BC - Ingredior Tanto - knife
Ingredior: "io entro".
Lo specialista, la versione più spinta della serie MF, ha una punta studiata per ottenere la massima penetrazione mentre la doppia guardia aumenta la sicurezza nei colpi di punta.
Destinazione d'uso: Tattico
Tipo di produzione: Industriale
Produzione Lama: Italia
Lama: in acciaio inox N690Co
Trattamento Lama: Testudo
Manicatura: Anticorodal con frangivetro in acciaio inox e tagliacinture di sicurezza
Lunghezza lama: 112mm.
Spessore lama: 4mm.
Lunghezza chiuso: 150mm.
Lunghezza totale: 265mm.
Spessore da chiuso: -
Bilanciatura: -
Peso: 200g.
Chiusura: Liner Lock con sicura addizionale
Clip: Acciaio inox
Fodero: Nylon Nero, compatibile MOLLE, con chiusura in Velcro
Confezione: Scatola di cartone con loghi Extrema Ratio
Note:4358T€298.36Out of stock
