Knife - Essential Tool for Camping, Outdoor Adventure and collection

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

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

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

Intended use: Tactical / Backup

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

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Origin: Acquired from a private owner, previously purchased and used
* Condition: Overall good, with marks and scratches on the blade and guard. The sheath shows signs of wear.
* Commercial availability: Discontinued
* Edge: Original
* Box: Included
* Sheath: Included
* Manuals, Certificates, and Warranties: Included
* Inspected and Certified by our internal laboratory

The ExtremaRatio 39‑09 Operativo is a tactical collector's knife that combines the prestigious Italian military tradition with the precision of modern engineering. Inspired by the silhouette of the 1939 "paratrooper assault dagger", this model is built with premium materials and military-grade finishes that meet operational standards.

Its matte black coating, absence of flashy logos, and overall sturdiness make it ideal for discerning collectors, tactical blade enthusiasts, and those who value operational tools with strong symbolic meaning.

Every detail, from the Böhler N690 steel blade to the Forprene handle, is designed to ensure a balance of aesthetics, functionality, and reliability.

Intended use: collection / display / symbolic tactical use
Production type: high-end industrial manufacturing
Country of production: Italy
Blade: Böhler N690 steel, hardened (~ 58 HRC)
Blade finish: black oxide coating (MIL‑C‑13924 burnishing, non-reflective)
Handle: black Forprene
Blade length: 195 mm
Blade thickness: 6.3 mm
Total length: 319 mm
Weight: 338 g
Locking mechanism: fixed blade (not a folding knife)
Packaging: standard manufacturer box / rigid thigh sheath / nylon leg sheath

KNIFE FROM A PRIVATE COLLECTION
* Origin: Retrieved from a private collection, previously purchased
* Condition: Like new
* Available on the market: Discontinued
* Sharpening: Original
* Blade marks: None
* Handle marks: None
* Box: Included
* Sheath: Included
* Manuals, Certificates and Warranty: Included
* Inspected and Certified by our in-house lab

Japanese steel meets Italian excellence

For this 2020 collaboration, exclusively for Coltelleria Collini, we decided to offer a series of best sellers produced by Extrema Ratio. These knives are made using the renowned San Mai steel produced by Japan’s Takefu Steel. Specifically, we used carbon-rich V-Toku2 at 62/63HRC for the central core and stainless SUS410 for the outer layers, resulting in superior cutting performance, penetration, edge retention, ease of sharpening, and at the same time excellent corrosion resistance and increased resilience due to the laminated structure.

Model Col Moschin Compact: this First Production Run was limited to 15 numbered units, from 1 to 15.

The lethal efficiency of the COL MOSCHIN knife, now in compact version. Comes with a rigid belt sheath and BELT-CLIP. The sheath can be mounted horizontally, vertically, or at a 45° angle.

Usage: tactical, sports, hiking, collecting

Blade: full tang, laminated Japanese steel (San Mai) with cutting edge in V-Toku2 (carbon steel) at 62/63HRC and outer cheeks in SUS410 (stainless)
Handle: Forprene
Blade length: 110mm
Blade thickness: 6.5mm
Overall length: 212mm
Balance: 0.5cm behind the guard
Weight: 209g
Sheath: ABS with multi-position Tek-Lok attachment
Notes: Numbered edition - cardboard box with Extrema Ratio logos and certificate - as the cutting edge is carbon steel, it is recommended to lightly oil the blade to maintain its condition.

As in ancient Japanese Samurai swords.

The laminated steel – imported into Italy by Collini Steel directly from Japan’s Takefu Steel – is based on the age-old Japanese sword-making tradition. As early as the 1100s, Japanese blacksmiths were combining different metals to craft Katana swords with extraordinary cutting power, resistance, and flexibility. This revolutionary technique allowed Samurai swords to survive through centuries and become among the most fascinating human-made artifacts. Applied to modern metallurgy, this tradition now yields advanced steels already used in knife-making by brands like Fallkniven, Cold Steel, Mcusta, Kai, Sog, Zwilling, Rockstead, etc.

San Mai Steel Features: A combination of different metals bonded together to create a composite with amplified properties:

- Greater edge retention
Thanks to high-carbon premium steels (VG10, CoS, Shiro) or powder steels (SPG2) in the core, once hardened, the blade achieves cutting performance far superior to traditional steels.

- Higher resilience
Based on Japanese sword construction, the multi-layer steel is highly resistant to breaking due to the toughness of the core and flexibility of the stainless cladding.

- Improved corrosion resistance
The outer stainless layers ensure high corrosion resistance. Takefu’s multi-metal bonding also enhances galvanic protection of the edge.

- Easy processing post heat-treatment
Despite being hardened, the outer layers retain softness, allowing easy drilling, grinding, or welding. Cryogenic treatment is recommended for optimal performance.

- Enhanced aesthetics
Multi-layer or Damascus-patterned knives are elegant, refined, and highly valued by collectors worldwide.

For more information: collinisteel

Includes cover and article published in the October/November 2016 issue of "Coltelli" magazine.

KNIFE RETRIEVED FROM A PRIVATE COLLECTION

• Origin: Retrieved from a private owner, previously purchased in the 2009 edition
• Condition: Overall in excellent condition
• Availability: Available on the market
• Sharpening: Original
• Blade marks: None
• Handle marks: None
• Box: -
• Sheath: -
• Manuals, Certificates, and Warranties: Present
• Checked and Certified: by our internal laboratory

The TOPS Sgt. Scorpion SGTS01 is a high-quality tactical knife, designed to deliver exceptional performance in critical situations. Handcrafted in the USA, this fixed blade knife features a spear point blade made of 1095 carbon steel with a black traction coating, ensuring superior resistance and durability. The black and red G10 handle offers a secure and comfortable grip, while the finger guard and upper jimping provide optimal control during use. The Sgt. Scorpion is easy to carry thanks to its compact design and included black Kydex sheath.

• Intended Use: Tactical
• Production Type: Industrial
• Country of Manufacture: USA
• Blade: 1095 Carbon Steel
• Blade Finish: Black traction coating
• Handle: Black and red G10
• Blade Length: 86 mm
• Blade Thickness: 6.35 mm
• Total Length: 197 mm
• Closed Thickness: Not applicable
• Weight: 264 g
• Packaging: Black Kydex sheath
• Notes: Each blade is hand-sharpened by a TOPS artisan in the USA.

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

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

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

Intended Use: Tactical/Military

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

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Provenance: withdrawn from a private collection, previously purchased.
* Condition: Overall in good condition
* Commercially available: Still in catalog.
* Sharpening: Factory.
* Marks on blade: Marks and abrasions.
* Marks on handle: Small signs of wear and tear.
* Box: Present, not complete (absence of warranties and plastic bags).
* Scabbard: Present, in good condition.
* Manuals, Certificates and Warranties: - -
* Checked and Certified by our in-house laboratory

Intended Use: Tactical/Military/Collection

Production type: Industrial
Country of Production: Italy
Blade: stainless steel N690Co 58HRC
Blade Treatment: Burnishing MIL-C-13924
Handle: Polymer
Blade Length: 167mm.
Blade thickness: 6.3mm.
Total length: 270mm.
Weight: 224g.
Sheath: Nylon thigh piece
Packaging: cardboard box with Extrema Ratio logos
Notes: Limited edition in 2018 pieces - Edition to celebrate 100 years of the Italian Ardites

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Origin: Withdrawn from a private collection, previously purchased.
* Condition: Like new
* Commercially available: Discontinued, only made in 30 pieces
* Sharpening: Factory sharpened
* Marks on blade: None
* Marks on handle: None
* Box: Present
* Scabbard: Present
* Manuals, Certificates and Warranties: Present
* Checked and Certified by our in-house laboratory

Use: tactical, sporting, hiking, collection

Blade: integral, rolled Japanese stainless steel (San Mai) with 61.5HRC cryogenically hardened CoS cutting edge
Handle: forprene
Blade length: 90mm.
Blade thickness: 6.5mm.
Total length: 210mm.
Balance: set back 0.5cm. from the guard branch
Weight: 214g.
Sheath: ABS with multi-position Tek-Lok attachment
Notes:  new knife, withdrawn from private collections

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 the 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 ease of re-sharpening. 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.

Col Moschin model: for this First Production Run a run of 11 pieces was produced, numbered from 1 to 11.

Special purpose cutting knife, specially developed for the 9th Col Moschin Parachute Assault Regiment, elite unit of the Folgore brigade.

Use: tactical, sports, hiking, collection

Blade: integral, in laminated Japanese steel (San Mai) with V-Toku2 (carbonaceous) cutting edge at 62 / 63HRC and external SUS410 (stainless steel) scales
Handle: forprene
Blade length: 160mm.
Blade thickness: 6.5mm.
Total length: 290mm.
Balance: set back to 0.5cm. from the guard branch
Weight: 265g.
Sheath: modular tactical, from thigh or belt, in Nylon
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.

Rolled steel - imported into Italy by Collini Steel directly from 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 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 side 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, 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 damascus pattern at the end of the processing are aesthetically elegant, refined and highly appreciated by collectors all over the world.

For more information: collinisteel
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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 the 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 ease of re-sharpening. 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.

Col Moschin Compact model: for this First Production Run a run of 10 pieces numbered from 1 to 10 was created.

The lethality of the COL MOSCHIN knife in compact version. Supplied with rigid belt sheath and BELT-CLIP. The rigid sleeve can be positioned horizontally, vertically or in a 45 ° inclined position

Use: tactical, sports, hiking, collection

Blade: integral, in laminated Japanese steel (San Mai) with V-Toku2 (carbonaceous) cutting edge at 62 / 63HRC and external SUS410 (stainless steel) scales
Handle: forprene
Blade length: 110mm.
Blade thickness: 6.5mm.
Total length: 212mm.
Balance: set back to 0.5cm. from the guard branch
Weight: 209g.
Sheath: ABS with multi-position Tek-Lok attachment
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 thin surface of oil.

As in the ancient Japanese Samurai swords.

Rolled steel - imported into Italy by Collini Steel directly from 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 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 side 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, 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 damascus pattern at the end of the processing are aesthetically elegant, refined and highly appreciated by collectors all over the world.

For more information: collinisteel

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 certificate

As 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.

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 / Multirole

Type 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 breakers

The particular situation created in the early years of the 1914/18 war, now mired in increasingly complex and protected trenches and fortifications, favored the formation of men who, little by little, specialized in the coup.

Our assault units, the Arditi, had their dagger. It was obtained from the pieces cut away by the long blades of the Vetterli 1870 bayonets, which in the narrow trenches, in the corridors, between the reticulars were only an obstacle. It was certainly a rustic weapon, of recovery, not too beautiful but certainly inexpensive, light, not cumbersome and in expert hands also effective.

Today, on the occasion of the centenary, we recall this important page of Italian military history with a limited celebratory series in only 100 numbered copies. This version has a satin blade and a walnut wood handle and is sold with a wooden box and leather sheath.

Intended use: Tactical / Military / Collection

Type of production: Industrial
Country of production: Italy
Blade: stainless steel N690Co 58HRC
Blade treatment: Satin
Handle: Walnut wood
Blade length: 167mm.
Blade thickness: 6.3mm.
Total length: 270mm.
Weight: 224g.
Sheath: leather thigh-strap
Packaging: wooden box
Notes: Limited edition in 100 numbered copies - Edition to celebrate the hundred years of the Italian Arditi

For this new exclusive collaboration with Extrema Ratio we decided to propose a best seller in the world of cutlery, the Shrapnel model. It's a satin blade version but the most important thing is that has been used, for the first time in Italy, the famous Japanese Steel San Mai produced by Takefu Steel. Specifically, we used the CoS (Cobalt Special, considered mechanically superior by 25% compared to the already appreciated VG10) for the central plate and the 420J2 (55 HRC) for the two side plates, in order to have a high cutting capacity, but at the the same time a remarkable resilience and resistance to oxidation.

A First Production Run of 30 pieces has been made.

SHRAPNEL OG is a truly versatile “back up” knife with marked combat qualities. Its leaf-shaped blade is flat ground at a characteristically low angle to a wide, extraordinarily sharp edge. The included hard sheath can be worn vertically, horizontally or obliquely (at a 45° angle). Tthe SHRAPNEL OG hilt design does not include a guard.

Use: tactical , sports , hiking , collection
Blade: Full , Japanese- rolled stainless steel ( San Mai) with sharp CoS to 61,7HRC in cryogenic tempering
Handle: Forprene
Blade length: 90mm.
Blade Thickness: 6.5 mm.
Overall length: 210mm.
Balancing: back to 0.5cm . by guard branch
Weight: 214g.
Sheath: ABS with Tek - Lok multi attack
Notes: cardboard box with Extremaratio logos and certificate

Clad Metal
It is a composite metal partly or entirely diffusion bonded together of different kinds of metals.

Metal composition shows higher performance which respective materials alone do not possess and the performance complements opposite characteristics of each material, that is "compound characteristics"

Clad Effect on Cutleries

Toughness
Like Japanese swords, clad metal is hard to break or bend, thanks to the toughness as the hard steel part is clad with soft steels.
Easy to work on
Cladded structure is easy to apply on such works as forging, grinding, sharpening or polishing to make a sharp blade.

Improved corrosion resistance　　　　
Proper material combination generates electrical potential difference and it enhances the corrosion resistance on blade edge.

Better and long lasting sharpness
Steel after forging pressure makes the microscopic structure denser and improves the sharpness and ensures long lasting performance.

Resource saving
As high class steel is used only for necessary part, it is perfectly cost effective..

Easy distortion correction
As the steel is bonded with soft steel materials, its blade is hard to break and the distortion correction is easy.

Easy drilling and welding after heat treatment
Though the steel gets harder after heat treatment, the soft steel never loses its softness, enabling the material to be drilled or welded.

Design improvement
Laminated patterns or Damascus patterns appear from basis materials which are bonded with different kinds of metals.

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 OG

The design of this military knife, sponsored by COFS (Special Forces Operative Command) in the person of General Bertolini, had already been suggested by some collectors of white weapons of the time. The restyling of the famous "paratrooper assault dagger mod. 1939 ", constitutes an important piece of Italian military history.

The knife, while borrowing the line, the structure and the proportions from the original, has been strengthened, enriched with functional modifications and made with materials with modern military specifications. The result of these few modifications is an extremely functional and effective dagger. The sheath is ankle-shaped to be worn as Italian paratroopers usually wear a bayonet.

The 39-09 COMBAT version is the compact version with 160mm blade and side sheath.

Intended use: Tactical

Type of production: Industrial
Country of production: Italy
Blade: in N690Co 58HRC stainless steel
Blade treatment: MilSpec MIL-C-13924
Handle: Forprene
Blade length: 160mm.
Blade thickness: 6.3mm.
Length closed: -
Total length: 284mm.
Thick when closed: -
Balancing: -
Weight: 305g.
Sheath: Nylon
Packaging: Cardboard box with ExtremaRatio logos
Note: -