Sport, Military and Collectible Knives | Coltelleria Collini

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 ACQUIRED FROM A PRIVATE COLLECTION
* Origin: acquired from a private individual, previously purchased
* Condition: excellent, no marks on the blade or handle, only a few minor signs of wear on the Kydex sheath
* Available on the market: still available, though with a different handle and finish
* Sharpening: factory-sharpened
* Marks on blade: none
* Marks on handle: none
* Box: not included (TOPS models are sold without a box)
* Sheath: included, with some minor signs of wear
* Manuals, Certificates, and Warranties: -
* Inspected and Certified by our in-house laboratory

The Tops Tom Brown Tracker is a knife that has been appreciated by survival enthusiasts for many years and is designed to handle any outdoor situation. Featuring a full-tang blade with a distinctive multi-section profile—ideal for cutting, carving, splitting, and skinning—it offers exceptional versatility. Crafted from 1095 carbon steel with a protective coating and an ergonomic Micarta handle, the Tracker combines strength, control, and reliability, making it an iconic tool for survivalists and bushcrafters.

Intended Use: Sports / Collectible

Production Type: Industrial
Blade: 1095 carbon steel 58HRC with “Black Traction Coating”
Handle: Micarta
Blade Length: 160mm.
Blade Thickness: 6.5mm.
Overall Length: 302mm.
Balance: at the lower guard
Weight: 595g.
Sheath: thermoformed Kydex, with dual multi-position clip
Notes: Designed by Tom Brown, featured in the film The Hunted starring Benicio Del Toro—entirely made in the USA—each knife is numbered.

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Origin: withdrawn from a private collection, previously purchased
* Condition: excellent, little use and not heavy use
* Available on the market: still available, although with a different handle
* Sharpness: factory sharp, little wear
* Marks on blade: minimal marks on blade treatment that do not compromise its use in any way
* Marks on handle: minimal signs of use
* Box: not present, as with most Tops models
* Sheath: present, with minimal signs of wear
* Manuals, Certificates, and Warranties: -
* Checked and Certified by our in-house laboratory

The Tops Tom Brown Tracker is a knife that has been appreciated by survival enthusiasts for many years and is designed to handle any outdoor situation. Featuring a full tang blade with a distinctive multi-section profile—ideal for cutting, carving, splitting, and skinning—it offers exceptional versatility. Made of 1095 carbon steel with a protective coating and ergonomic Micarta handle, the Tracker combines strength, control, and reliability, making it an iconic tool for survivalists and bushcrafters.

Intended use: Sports / Collection

Type of production: industrial
Blade: 1095 carbon steel 58HRC with “Black Traction Coating” (anti-reflective/non-slip)
Handle: Micarta
Blade length: 160mm.
Blade thickness: 6.5mm.
Total length: 302 mm.
Balance: at the lower guard branch
Weight: 595 g. (744 g. including sheath)
Sheath: Kydex, tactical with double multi-position clip
Notes: Design by Tom Brown, used in the film The Hunted with Benicio Del Toro, entirely handmade in the USA, each knife is numbered.

PREVIOUSLY PURCHASED AXE, FROM PRIVATE COLLECTION
* Provenance: Withdrawn from a private individual, previously purchased
* Condition: Same as new, never used
* Available on the market: Difficult to find
* Sharpening: Factory
* Signs on blade: None
* Signs on handle: None
* Box: -
* Sheath: Present
* Manuals, Certificates and Guarantees: -
* Controlled and Certified by our in-house laboratory

Designed to offer a compact yet extremely effective tool in emergency situations, Fireman's Backup was born from field experience and a careful analysis of the real operational needs of rescuers. The project is designed by Allen Jensen, a renowned outdoor designer and scout leader, who developed this tool after studying data and feedback from agencies and teams involved in wildfire management and emergency operations.

Due to its robustness and reliability, Fireman's Backup has been adopted not only by firefighters and emergency teams, but also by SWAT units, government agencies, and specialized military units, which use it as a support tool in tactical and forced-access operations.

Intended use: Heavy Utility / Tactical / Emergency / Breaching Tool

Type of production: Industrial
Country of production: USA
Blade: 1095 carbon steel full tang
Blade finish: BTC (black traction coating)
Handle: micarta
Blade length: 126x132mm.
Blade thickness: 6.5mm.
Total length: 325mm.
Weight: 775gr
Sheath: in Kydex and Nylon, with rotating multi-position clip
Packaging: -
Notes: previously purchased, from a private collection

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 WITHDRAWN FROM PRIVATE COLLECTION
* Origin: acquired from a private collector, previously purchased
* Condition: good, lightly used and not heavily worn
* Availability: still available on the market, though with a different handle version
* Sharpening: factory edge, slightly worn
* Blade marks: none on the treated area, slight oxidation spots on the edge
* Handle marks: none
* Box: not included, as with most Tops models
* Sheath: included, with friction marks on the Kydex and oxidation on the metal clips
* Manuals, Certificates and Warranties: -
* Checked and Certified by our in-house laboratory

The Tops Tom Brown Tracker is a survival knife highly appreciated for many years by outdoor enthusiasts, designed to tackle any wilderness challenge. Featuring a full tang blade with a distinctive multi-section profile — ideal for cutting, carving, chopping and skinning — it delivers outstanding versatility. Made of 1095 carbon steel with a protective coating and an ergonomic Micarta handle, the Tracker combines strength, control, and reliability, making it an iconic tool for survivalists and bushcrafters.

Intended use: Sport / Collection

Production type: industrial
Blade: 1095 carbon steel 58HRC with “Black Traction Coating” (anti-glare / anti-slip)
Handle: Micarta
Blade length: 160mm
Blade thickness: 6.5mm
Total length: 302mm
Balance: aligned with lower guard branch
Weight: 595g (744g with sheath)
Sheath: tactical Kydex with dual multiposition clip
Notes: Design by Tom Brown, featured in the film “The Hunted” with Benicio Del Toro, handmade in the USA, each knife individually numbered.

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Origin: Withdrawn from a private collection, previously purchased.
* Condition: Overall in very good condition.
* Commercially available: Discontinued
* Sharpening: Factory sharpened
* Marks on blade: A few small marks from time.
* Marks on handle: None
* Box: Espotive box present, with a few small marks due to time
* Scabbard: Present
* Manuals, Certificates and Warranties: -
* Checked and Certified by our in-house laboratory

2014 knife created through a collaboration between Fox and Hill Knives that commemorates the ISAF (International Security Forces) and ANSF (Afghan National Security Forces) memorial unveiled Sept. 22, 2013, in Kabul, Afghanistan, to honor fallen military personnel during peacekeeping operations in the country. The monument, with inscriptions in English, Pashtu and Dari, is a tribute to the different nationalities involved in the missions. The unveiling ceremony was attended by dignitaries from the Afghan government, security forces and ISAF, underscoring the value of remembrance and the sacrifices made.

Intended Use: Tactical/Collection

Type of production: Industrial
Country of Production: Italy
Blade: Stainless steel N690Co
Blade finish: hard ceramic coated
Handle: G10
Blade length: 150mm.
Blade thickness: 6.3mm.
Total length: 279mm.
Weight: 220g.
Sheath: made of Kydex, with MOLLE clip
Packaging: Cardboard box / display box with ISAF and Fox Knives symbols and logos
Notes: Designed by Hill Knives - previously purchased knife from a private collection

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

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Provenance: withdrawn from a private collection, previously purchased - SERIAL CK0269D
* Condition: quite good, the knife was used for medium/light cuts
* Commercially available: Out of production
* Sharpening: Factory sharpened
* Marks on blade: various due to use (see related photos), mostly rubbing/slight polishing
* Marks on handle: slight
* Box: Present, one side was damaged and was fixed with tape
* Scabbard: original
* Manuals, Certificates and Warranties: - -
* Checked and certified by our in-house laboratory

Intended Use: Tactical/Sporting

Production type: Industrial
Country of Production: Italy
Blade: N690Co stainless steel
Finish: Geo Camo (burnishing with laser treatment)
Handle: Forprene
Blade length: 110mm.
Blade thickness: 6.3mm.
Total length: 210mm.
Balance: recessed
Weight: 212g.
Sheath: ABS sheath with Tek-Lok attachment with automatic knife retention system.
Packaging: Cardboard box with Extrema Ratio logos

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Type: Previously Purchased - year of production 2004 - 1st series Shrapnel with double guard branch and kydex sheath
* Conditions: Like new
* Commercially available Yes
* Sharpening: Original
* Marks on blade: NO
* Signs on handle: NO
* Packaging: NO
* Sheath: In kydex
* Manuals, Certificates and Guarantees: YES
* Checked and Certified by our internal laboratory

Intended Use: Military/Tactical

Type of production: industrial
Blade production: Italy
Blade: N690Co 58/60HRC stainless steel
Blade treatment: MIL-C 13924 bluing
Handle: Forprene
Blade length: 110mm.
Blade thickness: 6.3mm.
Closed length: 142mm.
Total length: 210mm.
Weight: 210g.
Clips: absent
Sheath: ABS sheath with Tek-Lok attachment with automatic knife retention system.
Note: -

With the Sandrin knives brand, Turmond manufactures the blades of its knives using tungsten carbide which, through a sophisticated manufacturing process, reach the extraordinary hardness of 71 HRC, while maintaining at the same time a high torsion capacity and resilience.

Sandrin model Torino; innovation and inspiration come together in this EDC knife featuring exceptional blade material, ergonomic handle design and a revolutionary new locking mechanism. The Torino model's ceramic ball bearing action offers an extremely fluid opening and closing experience. What truly makes the Torino a modern marvel is a completely redesigned mechanism called the Recoil Lock. The closing of the knife is obtained by sliding the rear spacer towards the rear, eliminating the accidental release of the blade.

This elegant knife, made with Sandrin's patented tungsten carbide blade with StaySharp Technology ™, keeps a clean and sharp edge longer than traditional steel blades.

Intended use: Sports / Collection

Total length: 174mm
Blade length: 75mm
Blade thickness: 1.20 mm
Blade material: hardness 71 HRC polyhedral tungsten carbide
Finish: mirror polished / DLC coating
Handle length: 98mm
Handle thickness: 6mm
Handle material: Carbon fiber
Color: Black PVD Coating
Weight: 63 grams
Pocket clip: removable - reversible
Pocket Clip Detail: Black PVD Stainless Steel Coating
Lock Type: Recoil Lock
Country of production: Italy

With the Sandrin knives brand, Turmond manufactures the blades of its knives using tungsten carbide which, through a sophisticated manufacturing process, reach the extraordinary hardness of 71 HRC, while at the same time maintaining a high torsion capacity and resilience.

Sandrin model Torino; innovation and inspiration come together in this EDC knife featuring exceptional blade material, ergonomic handle design and a revolutionary new locking mechanism. The Torino model's ceramic ball bearing action offers an extremely fluid opening and closing experience. What truly makes the Torino a modern marvel is a completely redesigned mechanism called the Recoil Lock. The closing of the knife is obtained by sliding the rear spacer towards the rear, eliminating the accidental release of the blade.

This elegant knife made with a patented tungsten carbide blade with Sandrin's patented StaySharp Technology ™ keeps a clean and sharp edge for longer than traditional steel blades.

Intended use: Sports / Collection

Total length: 174mm
Blade length: 75mm
Blade thickness: 1.20 mm
Blade material: hardness 71 HRC polyhedral tungsten carbide
Finish: mirror polished / DLC coating
Handle length: 98mm
Handle thickness: 6mm
Handle material: red G10
Color: Black PVD Coating
Weight: 64 grams
Pocket clip: removable - reversible
Pocket Clip Detail: Black PVD Stainless Steel Coating
Lock Type: Recoil Lock
Country of production: Italy

Multi-purpose vegetable and fruit knife. Thanks to the wooden case (shirasaya), similar to the one used for the katana or the tanto, the blade remains perfectly protected and easily transportable.

Intended use: Sports / Collection

Blade: 420J2 steel
Japan blade production
Handle: cherry wood
Blade length: 105mm.
Blade thickness: 1mm.
Total length: 210mm.
Balancing: -
Weight: 36g.
Sheath: cherry wood sheath
Note:

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

Intended Use: Tactical / Collection

Production Type: Industrial
Country of Production: Italy
Blade: Stainless steel N690Co
Blade Finish: Hard ceramic coated
Handle: G10
Blade length: 150mm.
Blade thickness: 6.3mm.
Total length: 279mm.
Weight: 220g.
Scabbard: Kydex, with MOLLE clip
Package: Cardboard box / display with ISAF and Fox Knives symbols and logos
Notes: Designed by Hill Knives

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: -