Collection Knives: For Knife Collectors and Custom Knife Enthusiasts

The BFK Zero FOLGORE is an operational EDC project developed in collaboration with the “Folgore” Parachute Brigade, designed for continuous professional use where there is no room for error and every component must perform predictably.

The 3mm VG10 stainless steel blade is engineered to offer a true balance between edge retention, durability, and control, without unnecessary extremes. It features a geometry geared toward intensive daily use, designed to perform rather than be preserved. The construction combines an aluminum handle with steel liners, creating a rigid frame with tight tolerances and consistent mechanical response even under stress.

The Crossbar Lock system ensures safety and reliability at every stage of operation, while maintaining fully ambidextrous handling. Internal bearings ensure a smooth, repeatable opening action, free of jamming, designed to feel natural even without active attention.

The ergonomics are designed for extended carry: the compact profile reduces bulk without compromising the grip, while the ambidextrous clip allows for discreet and customizable carry. The weight remains low for the category, with a balanced distribution that does not feel fragile.

The BFK Zero FOLGORE is a military folding knife conceived as a professional everyday carry tool. It is not designed to be displayed, but to be used. Compact, reliable, efficient

Intended use: Tactical / EDC

Production type: Industrial
Country of manufacture: Italy
Blade: VG-10 stainless steel
Blade finish: Stonewashed with Folgore engraving
Handle: Anticorodal aluminum alloy
Blade length: 71mm.
Blade thickness: 2.5 mm.
Closed length: 99 mm.
Overall length: 166 mm.
Weight: 84 g.
Closure: Crossbar Lock
Clip: stainless steel, deep pocket style; reversible, removable, with custom engravings
Notes: Product manufactured under official licenses from the Italian Army

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Origin: Withdrawn from a private collection, previously purchased
* Condition: Like new, never used and never removed from its original packaging
* Available on the market: Out of production
* Sharpness: Factory sharp
* Marks on blade: None
* Marks on handle: None
* Box: Present
* Sheath: Present
* Manuals, Certificates, and Warranties: Present
* Checked and Certified by our in-house laboratory

Intended use: Tactical/Sport

Type of production: Industrial
Country of production: Italy
Blade: N690Co stainless steel
Finish: Testudo burnishing
Handle: Forprene
Blade length: 128mm.
Blade thickness: 6.3mm.
Total length: 258mm.
Balance: rearward
Weight: 253g.
Sheath: Gen.1, ABS, with Tek-Lok multi-position attachment
Packaging: cardboard box with Extrema Ratio logos
Notes: from a private collection - 2007 model now out of production (replaced by the T4000 series)

NEW STRUCTURE: Full Tang
NEW GEOMETRY: Greater Control
NEW HANDLES: Black G10

The Harpoon F EVO, limited to only 150 numbered pieces, is the functional evolution of a tried and tested design. It retains the identity of the original Harpoon, but refines its ergonomics, structure, and balance for real and continuous use.

The full tang construction, G10 scales, and updated geometry offer greater control and solidity, while the 6.3 mm Böhler N690 blade guarantees reliability, penetration, and cutting precision.

The EVO finish completes a knife designed for operational use, advanced survival, and knowledgeable collectors.

Intended use: Tactical / Collectible

Type of production: Industrial
Country of production: Italy
Blade: full tang in N690Co steel
Blade treatment: Anti-reflective burnishing with EVO finish
Handle: Black G10 with CNC machining
Blade length: 209 mm.
Blade thickness: 6.3 mm.
Total length: 340 mm.
Weight: 442 g.
Sheath: Thigh sheath, reinforced Cordura
Packaging: Cardboard box with Extrema Ratio logos and Limited Edition plaque with progressive knife numbering
Notes: Limited edition, numbered to only 150 pieces worldwide

LIMITED EDITION CARRY BOX

– BFK EVO Limited Edition
The BFK EVO is a compact folding knife designed as Extrema Ratio's flagship product for the EDC world. Produced in a limited series of 500 pieces, it is available exclusively in THE CARRY BOX. Extrema Ratio's build quality is evident in every detail: mechanical precision, selected materials, proven ergonomics, ease of handling, concealability, quick opening, and the proverbial reliability that has distinguished the brand for over 30 years. From the very first glance, it conveys a feeling of uncompromising strength and solidity.

Main features:

* Nitrogen steel blade with Tanto profile and reinforced tip, stone-washed finish.
* Black anodized aluminum scales, sturdy and compact for easy everyday carry.
* Crossbar lock for exceptional safety.
* Bearing system that guarantees quick, smooth, and natural opening.
* Customized lanyard on the tang for immediate extraction and improved grip.
* Dedicated laser engraving on the blade and clip that identifies the limited series.

BFK EVO is not an object to be shown off: it is a tool designed to be carried every day.

Intended use: EDC / Sports

Type of production: industrial
Country of production: Italy
Blade: Nitrogen stainless steel
Blade finish: Stonewashed with custom engravings
Handle: Anticorodal aluminum alloy
Blade length: 71mm.
Blade thickness: 2.5mm.
Closed length: 99mm.
Total length: 166mm.
Weight: 84g.
Locking Mechanism: Crossbar Lock
Clip: stainless steel, deep pocket type; reversible, removable, with custom engravings
Notes: Limited edition, numbered to only 500 pieces worldwide - Knife available for purchase only on this occasion and together with the Carry Box

– Extrema Ratio Essential Cap
Baseball cap with an elegant, urban design. Made of sturdy, breathable fabric, it features a silicone patch with the Extrema Ratio logo, an instantly recognizable symbol of belonging.

– Leather Zip Wallet
Black leather wallet with three-sided zipper closure and lanyard hook, ideal for preventing accidental loss. Designed to hold everything you need (cards, bills, etc.), it is a durable and reliable accessory, perfect for everyday use.

– Carbon Fiber Card
Compact carbon fiber tool with a sharp lower edge, useful in emergency or self-defense situations. It is the size of a credit card and fits into the Extrema Ratio wallet. A side recess facilitates proper grip for maximum effectiveness.

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.

NEW STRUCTURE: Full Tang
NEW STEEL: CPM-MagnaCut
NEW HANDLES: Black G10
SAME EXTREMA RATIO QUALITY IN ONLY 250 PIECES

* Professional when needed. Unconventional when required.
* Only 250 pieces. No replicas. No hesitation.
* Those who own it join an exclusive group.
* Those who use it know what it means to trust their tool.
* Born from the rigors of the operational world. Evolved to dominate unpredictability.

REQUIEM EVO DARK is the full tang version of the famous Requiem, enhanced in every aspect: more robust structure, new spear point profile for superior penetration and clean cuts, black G10 scales with a futuristic design.

CPM-MagnaCut steel, the ultimate evolution in materials for real-world tools: durable, sharp, and tough even under stress. A compact, relentless knife, perfect for both the operational theater and the urban environment.

Two contexts. Two sheaths:
* Aspis (EDC Ready): Safe transport, quick draw, concealability.
Compatible with M.O.L.L.E. systems, it is perfect for everyday use, prepping, or urban adventure.
* Kydex (Tactical Setup): Designed for the MOLLE system, it easily adapts to Ulticlip, Belt Clip, Paracord, and alternative configurations.

Intended use: Tactical / Multipurpose

Type of production: Industrial
Country of production: Italy
Blade: full tang in CPM-MagnaCut steel
Blade treatment: Anti-reflective burnishing with engravings
Handle: Black G10 with CNC machining
Blade length: 116mm.
Blade thickness: 4mm.
Total length: 237mm.
Weight: 135g.
Sheath: ASPIS nylon with two multi-position clips, M.O.L.L.E. compatible + thermoformed Kydex
Packaging: Cardboard box with Extrema Ratio logos and Limited Edition plaque with progressive knife numbering
Notes: Limited edition, numbered to only 250 pieces worldwide

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Origin: Collected from a private individual, previously purchased and used.
* Condition: Used, overall in good condition, with slight signs of wear and tear.
* Commercially available: Discontinued
* Sharpening: Re-sharpened, sharpening can be improved.
* Marks on blade: Small signs of wear and tear.
* Marks on handle: Small signs of wear and minimal scratches, anodizing slightly faded by time in places
* Box: Present
* Scabbard: -
* Manuals, Certificates and Warranties: Present
* Checked and Certified by our in-house laboratory

Knife withdrawn from private collection - Ti-Rock model no. 38 of 100 pieces made by Extrema Ratio in collaboration with Coltelleria Collini - Knife discontinued since 2016

Intended use: collection / EDC / CQD

Type of production: industrial, limited
Blade: N690 stainless steel at 58HRC with compound type sharpening
Blade finish: burnished
Country of manufacture: Italy
Handle: anodized Titanium, machined from solid, with integral Frame Lock locking system with removable stainless steel strike and safety
Blade length: 75mm.
Blade thickness: 6.3mm.
Total length: 180mm.
Weight: 190g.
Clip: stainless steel, reversible, deep pocket, tip up
Notes: tapered skull crasher engaged in the tang 
Box: cardboard, numbered, with ExtremaRatio and Coltelleria Collini logos
Notes: Skull Crasher conical grafted in the tang - Made only in 100 numbered examples on blade and box

Ka-Bar - 1217 - Full Set 1991 50th Pearl Harbour Anniversary Model 02-1241 - PRIVATE COLLECTION - knife

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Provenance: withdrawn from a private collection, previously purchased.
* Condition: Like new, never taken out of its box. 
* Commercially available: Discontinued, 1991 model
* Sharpening: Factory.
* Marks on blade: /
* Marks on handle: /
* Box: Present, original, with “50th Anniversary Pearl Harbor” logos.
* Scabbard: Present
* Manuals, Certificates and Warranties: Present, complete set.
* Checked and Certified by our in-house laboratory

This Ka-Bar 1217, made in 1991, is a commemorative knife designed to mark the 50th anniversary of the Japanese attack on Pearl Harbor on December 7, 1941. This surprise attack, conducted by the Imperial Japanese Navy, aimed to destroy the U.S. Pacific Fleet and prevent a rapid response to Japanese expansion. The raid claimed the lives of about 2,400 people, including military personnel and civilians, and led the United States to enter World War II, declaring war on Japan the following day.

The Ka-Bar 1217, with its high-carbon steel blade and leather ring handle, has the same design as the legendary Ka-Bar knife used by U.S. soldiers during the conflict. The blade is engraved with the 50th anniversary logo and a symbolic image of Pearl Harbor, making the knife a collector's item and a tribute to the historical memory of the event. The Ka-Bar 1217 is not just a tool but a mark of honor and respect for the victims of the attack and the heroes who contributed to the victory of the United States during World War II.

Unlike the standard models, here we have engraving from the right side of the blade, hand-molded leather washers with an aged look, and even the scabbard is made like the 1940s models, with darker leather and steel staple points in addition to the traditional contrasting cream-colored stitching.

Intended Use: Tactical/Military

Blade: 1095 56/58HRC carbon steel
Handle: hand-molded leather rings with aged appearance
Blade length: 180mm.
Blade thickness: 4mm.
Total length: 290mm.
Balance: set back - 1cm. from the lower guard branch
Weight: 305g.
Sheath: leather, with contrasting stitching and steel staple points
Notes: very rare 1991 commemorative edition for the 50th anniversary of the attack on Pearl Harbor

USED KNIFE, WITHDRAWN FROM PRIVATE COLLECTION
* Type: Knife previously purchased, from a private collection
* Condition: Like new
* Available on the market: Out of production
* Sharpening: Factory edge
* Blade marks: None
* Handle marks: None
* Box: Present and in excellent condition
* Sheath: Present and like new
* Manuals, Certificates, and Warranties: Present
* Checked and Certified by our internal laboratory

At 2:38 in the morning on the night between January 16 and 17, 1991, just 18 hours and 38 minutes after the expiration of the ultimatum set by the United Nations, Operation "Desert Storm," the largest allied military action since 1945, began.

In what would become the first conflict in history to be broadcast live on television, 90,000 tons of bombs would be dropped, marking a new point of no return for what was considered acceptable by global public opinion. The imagery that war helped create would lay the groundwork for the long series of Western military interventions in the Middle East in the years that followed.

Intended use: Tactical/Military

Country of production: USA
Blade: 1095 carbon steel 56/58HRC
Handle: Leather rings
Blade length: 180mm.
Blade thickness: 4mm.
Total length: 305mm.
Balance: Set back - 1 cm from the lower guard
Weight: 305g.
Sheath: Leather
Notes: Commemorative edition from the 2000s, out of production and no longer available

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
* Type: Previously Purchased
* Condition: 2014 knife overall in near new, unused condition, some minor marks on metal parts given by age
* Commercially available Discontinued.
* Sharpening: Factory sharpened, never used for cutting.
* Marks on blade: No
* Marks on handle: Some discoloration of laser engravings given by age.
* Box: Present
* Scabbard: -
* Manuals, Certificates and Warranties: Present
* Checked and Certified by our in-house laboratory



Intended Use: Tactical / Multirole

Production type: Industrial
Country of Production: Italy
Blade: stainless steel N690Co hardened to 58HRC
Blade Finish: Desert Warfare
Handle: Anticorodal with stainless steel spacer
Blade length: 115mm.
Blade thickness: 6.3mm.
Total length: 260mm.
Weight: 245g.
Lock system: Back Lock with additional safety pin
Packaging: cardboard box with Extrema Ratio logos
Notes: Previously purchased discontinued specimen from a private collection. Full set, in near-new condition

Extrema Ratio Misericordia Ranger XXV Anniversarium Limited Edition is a limited series version of only 400 pieces that preserves intact all the features of the famous Misericordia model adopted by the 4th Alpine Parachute Regiment.

Misericordia Ranger XXV Anniversarium Limited Edition comes with 2 sheaths, both in desert color: the first, produced in kydex, offers the possibility of attachment via belt-clip, ulti-clip and malice-clip (optional accessories not included with the product). Attachment to the M.O.L.L.E. system by braiding the paracord is also possible. The second, made of high-strength Nylon, has 2 adjustable loops that allow it to be attached to M.O.L.L.E. systems.


Intended Use: Tactical/Multi-role

Production type: Industrial
Country of Production: Italy
Blade: stainless steel N690Co hardened to 58HRC
Blade treatment: Geotech Camo (Black Warfare)
Handle: FRN (fiberglass reinforced Nylon) with skull crasher / rear glass breaker
Blade length: 118mm.
Blade thickness: 4mm.
Total length: 233mm.
Weight: 87g.
Sheath: double sheath: Kydex and ABS.
Packaging: polypropylene case with Misericordia / Extrema Ratio logos and commemorative Coin
Notes: Limited edition of only 400 pieces, numbered on box and blade to celebrate the company's 25th anniversary

Extrema Ratio, on the occasion of the 10th anniversary of COM.FO.SE., presents a version in a limited series of only 70 pieces, "A.S.F.K. X BRIGATAE ANNIVERSARIUM LIMITED EDITION". 

A.S.F.K. (Assault Special Forces Knife) is the dagger dedicated to and acquired by the Army Special Forces Command. This model recalls the tradition of arditism and the bloody trench battles punctuated by assaults with a bladed weapon. A.S.F.K. is a trench knife reimagined with a modern twist.

A.S.F.K. X BRIGATAE ANNIVERSARIUM LIMITED EDITION comes in an IP67-certified watertight Polypropylene technical case with pressurization valve that is weatherproof, dustproof and shockproof. Inside is a metal plate with the numbering of the series limited to only 70 pieces.

Intended Use: Tactical/Collection

Type of production: Industrial
Country of Production: Italy
Blade: Stainless steel N690Co 58HRC
Blade finish: Burnishing Geotech Camo
Handle: Forprene
Blade Length: 162mm.
Blade thickness: 6.3mm.
Overall length: 289mm.
Balance: backward
Weight: 413g.
Sheath: cordura, M.O.L.L.E. compatible.
Packaging: thermoplastic collectible case with logos 
Notes: limited and numbered edition made in only 70 pieces

This special edition in 250 pieces, proposed on the occasion of the 25th anniversary of the brand, maintains the shape of the original, but with materials and finishes corresponding to the current production.

The K1 is equipped with a modified spear point profile blade, characterized by a tip that combines the 40° "tanto" profile with the more traditional European one, creating a sharp but very solid hybrid which, with the false false edge, makes it particularly effective in jab. The bevel is high, allowing for a very effective cutting angle.

The blade is immediately recognizable by the fenestration at the heel, which allows for considerable lightening without compromising its strength. It is made of Böhler N690 steel, with heat treatments that bring its hardness to 58 HRC for the best combination of edge hold and resistance. The finish is satin with flat grinding.

The handle, in anodized Anticorodal alloy, compared to the original presents the lightening on the sides that make the Extrema Ratio knives immediately distinguishable, but maintains the arched shape and the lateral "bellies" of the K1, offering an excellent grip both in the "saber" than in the "reverse" grip.

The terminal part of the handle curves to form a sort of hook which allows particularly easy and rapid extraction from the scabbard, while the tang protrudes from it with a triangular cusp which acts as a glass breaker with a slot which allows the knife to be equipped of lasso.

The leather scabbard faithfully reproduces the original while maintaining both the qualities of ease and speed of extraction. The carry can take place in an upside-down axillary position, horizontally on the belt or tactically on the thigh.

The K1 equipment is completed with a polypropylene case ‌, complete leather sheath and underarm shoulder strap.

WEIGHT g.: 493
WEIGHT OZ.: 17.39
BLADE LENGTH (MM): 210
BLADE LENGTH (IN): 8.26
TOTAL LENGTH (MM): 351
TOTAL LENGTH (IN): 13.81
BLADE THICKNESS (MM): 6.3
BLADE THICKNESS (IN): 0.25
BLADE MATERIAL: BÖHLER N690 STEEL (58HRC)
BLADE FINISH: SATIN
BLADE GRINDING: FLAT EDGE
HANDLE MATERIAL: ANODIZED ANTICORODAL ALUMINUM

Extrema Ratio S-THIL Black Warfare, a special version of the S-THIL model, is a backup knife with a monolithic structure machined from a single piece of 5 mm thick BOHLER N690 steel, developed in collaboration with the designer Thilo Arnd Schiller. The spear point type blade is hardened to 58 HRC in order to obtain the best balance between edge retention and strength, has a false edge in the upper part which enhances the characteristics of penetration and tip work, and is equipped with a Full length furrow flowing elegantly from blade to grip.

The blade is milled integrally with the knife to enhance its compactness and lightness, maintaining a minimum thickness even with a profile that recalls the classic Extrema Ratio handle. This profile forms two small guards and a comfortable thumb rest in order to prevent the hand from slipping towards the blade. On the end there is a skull crusher with a diamond-shaped tip and a slot that allows you to attach a wrist strap to the knife or to equip the handle with paracord winding.

The special Black Warfare version uses the innovative and original Geotech Camo pattern, created by laser engraving. The molded nylon sheath has been designed to be extremely flat and with very small lateral dimensions, in order to make it as compact as possible. The design of the knife makes it ambidextrous, allowing it to be inserted into the sheath with the cutting edge of the blade to the right or left. The double retention system integral with the sheath is made up of four pressure elements that work only two at a time, depending on right/left use, while in the nylon textile part there is a button that allows you to secure the knife to the sheath . The end of the sheath has a hole that allows you to expel liquids or residues inside. The possibility of applying belt clips, ulticlips, malice clips makes it extremely versatile. It is also possible to hook the sheath to the M.O.L.L.E. system. weaving the paracord lanyard.

The S-thil Black Warfare is supplied in an IP67 certified watertight Polypropylene technical case, with pressurization valve, resistant to atmospheric agents, dust and shocks. Inside there are also the Nylon sheath, the double ULTICLIP and the double grain sharpening plate (ceramic abrasive and synthetic diamond).

Intended use: Tactical / Multirole

Type of production: Industrial
Country of production: Italy
Blade: N690Co stainless steel hardened to 58HRC
Blade treatment: BURNISHING MIL-C-13924 GEOTECH CAMO
Handle: N690 steel
Blade length: 119mm.
Blade thickness: 5mm.
Total length: 230mm.
Weight: 123g.
Sheath: in Kydex, with double multiposition ULTICLIP attachment clip
Packaging: Polypropylene case with S-Thil / Extrema Ratio logos
Notes: exclusive briefcase to celebrate the company's 25th anniversary

Il Red Spacer KA-BAR è probabilmente il coltello KA-BAR più collezionabile realizzato durante la seconda guerra mondiale. Il distintivo distanziatore rosso presente sotto la guardia ha attirato l'attenzione dei collezionisti per decenni. Sebbene gli originali siano rari e costosi, il laboratorio State & Union di KA-BAR - che si occupa delle realizzazioni custom - ha realizzato un piccolo lotto di questo iconico coltello.

Le rondelle in pelle sono modellate a mano per creare un aspetto invecchiato. Il fondello e la guardia sono lavorate artigianalmente per replicare le forme e le dimensioni dell'originale.

Ogni distanziatore rosso è fatto a mano per essere leggermente più lungo dell'attuale distanziatore utilizzato sui coltelli da combattimento/utilità KA-BAR. La lama viene sabbiata, quindi trattata a freddo.

Il fodero subisce un processo di invecchiamento per scurire la pelle e far corrispondere il colore del fodero originale.

Destinazione d'uso: Tattico/Militare

Lama: in acciaio al carbonio 1095 56/58HRC
Manicatura: anelli di cuoio
Lunghezza lama: 180mm.
Spessore della lama: 4mm.
Lunghezza chiuso: -mm.
Lunghezza totale: 290mm.
Bilanciatura: arretrata - 1 cm. dal ramo di guardia inferiore
Peso: 305g.
Chiusura: -
Clip: -
Fodero: in cuoio
Note: -

La Coltelleria Collini di Busto Arsizio è distributore ufficiale per l'Italia del marchio KA-BAR

THE BRAND
Exclusive collaboration between Coltelleria Collini and Extrema Ratio marketed under the brand KNIVES.IT. 

TECHNICAL DATA SHEET
Intended Use: Collection / Tactical / Neck knife
Production type: Industrial
Country of Production: Italy
Blade: Stainless steel N690Co 58/60HRC
Blade finish: Black PVD cat. MIL-C-13924
Handle: Stainless steel N690Co 58/60HRC
Blade length: 40mm.
Blade thickness: 5.5mm.
Total lenght: 166mm.
Weight: 86g.
Sheath: optional (available separately) in Kydex, handcrafted by the Italian Knife Maker Simone Tonolli.
Package: cardboard box with Extrema Ratio logos
Notes: knife created and manufactured by Extrema Ratio - each knife is numbered - Design by LoTactical

HISTORY
The Tengu takes its name from a mythical creature of Japanese folklore that is represented with both human and raven features, they had the reputation of being great warriors and legends say that some founders of martial arts were trained by them.

- It is designed to be used in many different grips, but is especially effective in the reverse grip.
- Designed to be carried in a variety of ways, whether as a neck knife, under shirt, clipped in a pocket or around the waist using optional systems such as Ulti-Clip or Tek-Lok or various M.O.L.L.E. type attachments.
- With its thickness of 5.5 mm. is extremely robust and thanks to the shape of the handle is comfortable even by those with large hands or those who want to use it with tactical gloves.
- The blade is compact, robust and very functional for both precision cutting and hard materials thanks to the serrated part on the back. The tanto-shaped tip is very robust and optimal for engraving work.

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.

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 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.

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.

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

Purpose of use: Collection / Sportsman

Type of production: Sprint Run, Industrial, Open Number
Country of production: Prato - Italy
Blade: Coreless Steel VG10 / VG2 61HRC made in Japan by Takefu Steel
Blade treatment: chemical detection
Handle: Anodized aluminum anticorodal
Blade Length: 70mm.
Blade thickness: 2.5mm.
Closed length: 99mm.
Total Length: 168mm.
Closure thickness: 11mm.
Weight: 84g.
Opening: ambidextrous opening pin
Washers: in fiberglass
Closure: Liner Lock
Clip: stainless steel, deep pocket, removable and reversible
Packing: Cardboard box with Extrema Ratio logos - Numbered guarantee certificate
Notes: Limited edition - Each specimen is numbered on the grip and on the internal warranty certificate - Exclusive Product of Coltelleria Collini

ABOUT THE STEEL

More than just a damask, Coreless steel made by Japanese Takefu Steel comes with over 70 layers of VG10 and VG2 stainless steel welded, forged and coated between them so that you can form a lightweight, slim and durable blade with a spectacular damask outer pattern.

The peculiarity of Coreless steel, unlike conventional rolled steel or Japanese San-Mai, is that it does not have a hard core steel that is used for the cutting edge but has both the VG10 and VG2 steels arranged to form the cutting edge so alternating and sequential to each other.

This particular construction gives the blade - compared to the two steels that make it, individually taken - greater resistance to oxidation, higher surface hardness (up to 61.5HRC), 25% more than cutting capacity, 25% more than the wire hold capacity and 25% more resilience making the blade more robust and less subject to breakage.

Thanks to this latest steel, Takefu Steel has been rewarded on Japanese territory for research and development and innovation in the cutting-edge landscape. Coreless steel has already been chosen by major brands such as Kai and Mcusta Zanmai who since 2017 proposed it on their top productions of professional kitchen knives.

Purpose of use: Collection / Sportsman

Type of production: Sprint Run, Industrial, Open Number
Country of production: Prato - Italy
Blade: Coreless Steel VG10 / VG2 61HRC made in Japan by Takefu Steel
Blade treatment: chemical detection
Handle: Anodized aluminum anticorodal
Blade Length: 70mm.
Blade thickness: 2.5mm.
Closed length: 99mm.
Total Length: 168mm.
Closure thickness: 11mm.
Weight: 84g.
Opening: ambidextrous opening pin
Washers: in fiberglass
Closure: Liner Lock
Clip: stainless steel, deep pocket, removable and reversible
Packing: Cardboard box with Extrema Ratio logos - Numbered guarantee certificate
Notes: Limited edition - Each specimen is numbered on the grip and on the internal warranty certificate - Exclusive Product of Coltelleria Collini

ABOUT THE STEEL

More than just a damask, Coreless steel made by Japanese Takefu Steel comes with over 70 layers of VG10 and VG2 stainless steel welded, forged and coated between them so that you can form a lightweight, slim and durable blade with a spectacular damask outer pattern.

The peculiarity of Coreless steel, unlike conventional rolled steel or Japanese San-Mai, is that it does not have a hard core steel that is used for the cutting edge but has both the VG10 and VG2 steels arranged to form the cutting edge so alternating and sequential to each other.

This particular construction gives the blade - compared to the two steels that make it, individually taken - greater resistance to oxidation, higher surface hardness (up to 61.5HRC), 25% more than cutting capacity, 25% more than the wire hold capacity and 25% more resilience making the blade more robust and less subject to breakage.

Thanks to this latest steel, Takefu Steel has been rewarded on Japanese territory for research and development and innovation in the cutting-edge landscape. Coreless steel has already been chosen by major brands such as Kai and Mcusta Zanmai who since 2017 proposed it on their top productions of professional kitchen knives.

Folding knife made upon specific requests of the department of the Italian Army 185 ° RAO ( Target Acquisition Regiment ) and is now included the eponymous department . The knife supplied differs from the calendar for the total lack of writings or logos on the blade.

Limited Edition RAO model characterized by a satin blade in Japanese rolled steel produced by Takefu Steel. to the central plate and the 420J2 (56 HRC) In the specific CoS it is used to 61,5HRC (Cobalt Special deemed superior mechanically by 25% compared to the already appreciated VG10) for the two side plates, in order to have a very high capacity cutting but at the same time a remarkable resilience and resistance to oxidation.
folding knife made upon specific requests of the Italian Department of the Army 185th RAO (Regiment Acquisition Objectives) and currently supplied to the homonymous department. The knife supplied differs from that only civil to the total lack of written or logos on the blade.

Intended Use: Military / Tactical

Type of production: Industrial
Production Lama: Italy
Blade: (San Mai) Japanese-rolled stainless steel with sharp CoS to 61,5HRC in cryogenic tempering
Lama Treatment: Testudo
Handle material: anticorodal 4.5mm
Blade length: 118mm.
Blade Thickness: 6.3mm.
Length closed: 142
Overall length: 261mm.
Balancing: -
Weight: 335g.
Closure: front modified lock - threaded safety pin
Clip: -
Sheath: tactical nylon by Vega with M.O.L.L.E. attacks suitable for both the closed knife that open - color BLACK
Notes: sharpening the included Diamond

A Coltelleria Collini Exclusive - Limited edition, available in only 33 serialized pieces

Intended Use: collection / EDC / CQD

Type of production: Industrial, Limited
Blade: Japanese-rolled stainless steel (San Mai) with sharp CoS to 61,5HRC in cryogenic quenching; with fuller double concave in the strong blade
Blade treatment: Satin finish
Production Country: Italy
Handle: Titanium, Billet, with full Frame Lock locking system with sash and secure removable made of stainless steel
Blade length: 75mm.
Blade Thickness: 6.3mm.
Overall length: 180mm.
Weight: 186g.
Clips: stainless steel, reversible type deep pocket and port tip up
Notes: Skull Crasher tapered shank engaged in - Edition limited and numbered edition in only 33 serialized pieces on the blade and box
Box: cardboard, numbered, with ExtremaRatio logos and Coltelleria Collini

A Coltelleria Collini Exclusive - Limited edition, available in only 33 serialized pieces

Intended Use: collection / EDC / CQD

Type of production: Industrial, Limited
Blade: Japanese-rolled stainless steel (San Mai) with sharp CoS to 61,5HRC in cryogenic quenching; with fuller double concave in the strong blade
Blade treatment: Satin finish
Production Country: Italy
Handle: Titanium, Billet, with full Frame Lock locking system with sash and secure removable made of stainless steel
Blade length: 75mm.
Blade Thickness: 6.3mm.
Overall length: 180mm.
Weight: 186g.
Clips: stainless steel, reversible type deep pocket and port tip up
Notes: Skull Crasher tapered shank engaged in - Edition limited and numbered edition in only 33 serialized pieces on the blade and box
Box: cardboard, numbered, with ExtremaRatio logos and Coltelleria Collini

A Coltelleria Collini Exclusive - Limited edition, available in only 33 serialized pieces

Intended Use: collection / EDC / CQD

Type of production: Industrial, Limited
Blade: Japanese-rolled stainless steel (San Mai) with sharp CoS to 61,5HRC in cryogenic quenching; with fuller double concave in the strong blade
Blade treatment: Satin finish
Production Country: Italy
Handle: Titanium, Billet, with full Frame Lock locking system with sash and secure removable made of stainless steel
Blade length: 75mm.
Blade Thickness: 6.3mm.
Overall length: 180mm.
Weight: 186g.
Clips: stainless steel, reversible type deep pocket and port tip up
Notes: Skull Crasher tapered shank engaged in - Edition limited and numbered edition in only 33 serialized pieces on the blade and box
Box: cardboard, numbered, with ExtremaRatio logos and Coltelleria Collini

Collectors Edition with:

* Box of ABS branded laser
* Tactical Kydex scabbard and leather, handcrafted
* Attack Tek-Lok
* Lanyard black paracord with custom anodized titanium wire stop with slogans and Extrema Ratio Knives Collini

Only two specimens at our disposal: Number 4 of 100 and number 9 of 100

This is a Collini Cutlery Exclusive - Only available in 100 serialized pieces

Intended Use: collection / EDC / CQD
Type of production: industrial, Limited
Blade: N690 stainless steel in 58HRC with hollow ground fuller
Blade Treatment: Black Testudo
Blade Production: Italy
Handle: Titanium machined from solid.
Closing system: Frame Lock with swing and safe removable stainless steel
Blade length: 75mm.
Blade Thickness: 6.3mm.
Overall length: 180mm.
Weight: 190g.
Clips: stainless steel, reversible, deep pocket, tip up
Notes: Conical Skull Crasher engaged in the shank - Limited and serialized edition in only 100 pieces
Box: Cardboard, serialized, with Extrema Ratio and Coltelleria Collini logos

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.

Ka-Bar - USMC Vietnam Military Knife K-9140 - Knife

Intended Use: collection

Blade: 1095 carbon steel 56 / 58HRC
Handle: Leather rings
Blade length: 180mm.
Blade Thickness: 4mm.
closed length: -mm.
Overall length: 305mm.
Balancing: backward - 1 cm. the branch of the lower guard
Weight: 305g.
Closed: -
Clip: -
Sheath: Leather
Notes: Limited Edition

Commissioned and officially adopted in 2002 by the famous 9th Regiment. Raiders "Col Moschin", this model expresses the quintessence of pure combat knife.

Inspired by daggers with asymmetric blade and straight handle but oriented Arditi, from which the Regiment traces its vestiges, it was reworked in a modern way.
The center of gravity is strong backlog, particularly the tip piercing. And 'light, handy and intuitive. Each new intruder receives one, and each new intruder is trained to use it.

All knives of this series have straight handles KRATON from ergonomic design whose shape and size favors besides a solid grip the rapid change of straight handle (Sabre Grip) to upside (Reverse Grip). An Allen screw stainless steel allows the campaign from disassembly for maintenance and lubrication of the through shank increasing the operational life of the knife.

The sheath and 'suitable all'aviolancio and underwater operations and amphibious and is' applicable to the belt or the accoutrements.

Intended Use: Collection / Tactical / Military

Production Country: Italy
Blade: N690Co 58HRC stainless steel
Surface treatment: Black PVD
Handle: Removable Kraton
Blade length: 160mm.
Blade Thickness: 6.3mm.
Overall length: 290mm.
Balancing: backward, 1 cm. the branch of the lower guard
Weight: 265g.
Sheath: tactical modular, from thigh or belt, Nylon
Notes: Limited Edition with exhibitor in Plexyglass

** SOLD OUT - OUT OF STOCK AND OUT OF PRODUCTION ** 

This is a Collini Cutlery Exclusive - Only available in 100 serialized pieces

Intended Use: collection / EDC / CQD
Type of production: industrial, Limited
Blade: N690 stainless steel in 58HRC with hollow ground fuller
Blade Treatment: Black Testudo
Blade Production: Italy
Handle: Titanium machined from solid.
Closing system: Frame Lock with swing and safe removable stainless steel
Blade length: 75mm.
Blade Thickness: 6.3mm.
Overall length: 180mm.
Weight: 190g.
Clips: stainless steel, reversible, deep pocket, tip up
Notes: Conical Skull Crasher engaged in the shank - Limited and serialized edition in only 100 pieces
Box: Cardboard, serialized, with Extrema Ratio and Coltelleria Collini logos

Extrema Ratio is proud to present the Culter Venatorius that, so as not to contradict the current address is a technical knife, practical, perhaps a bit 'specialized and that gives a nod to tradition and to the tastes of the most traditionalist hunters who like to do everything yourself.

The Latin motto engraved on the blade reads:

"I am the hunting knife, I am the claw beak and fang of my master. My job is as old as the flesh and blood.", We find that describes significantly the pure essence of the instrument.

We feel to say that if a tool could be capable of humor probably would have added: "It 'a dirty job ... but someone has to do it ...".

The Culter Venatorius, more than a knife, is a complete equipment for slaughtering and skinning of medium and medium-large sized prey, suitable for ungulate hunters.

The kit includes: a knife to slaughter and general use, one skinner provided with cross handle to skin and clean the internal organs the animal, a carver to skin head and snout and a stone with two grains for regrinding of all instruments.

These accessories are contained in the sleeve pocket leather fat-crafted.

The sheath while maintaining the traditional lines, is completely reversible (both the pocket that the passer can be disassembled and applied on the other face of the sheath) and to secure the side which holds the knife has the ambidextrous release. The sheath is handmade by a master saddler leather first-aged choice.

And 'possible to bring the sheath is vertical to the belt connected to the leg, which in a comfortable horizontal position, the shoulder or stopped at the waist with a long belt kit with buckle and snap hooks.

The handle in cocobolo oiled is long enough to allow the use of the knife as a little machete or chopper and thin enough to allow precision cuts.

The blade is in the classic Bohler N690, an excellent steel chrome molybdenum vanadium and cobalt which deserved to become a standard in technical and professional cutlery.

The finish is satin.

The Culter Venatorius is dedicated to all those who wish an Extrema Ratio as batting partner.

- BLADE LENGTH: mm 195
- LENGTH: 340 mm
- BLADE THICKNESS: 6.3 mm
- WEIGHT: 360 g
- BLADE STEEL: BOHLER N690 (58HRC)
- HANDLE MATERIAL: Cocobolo oiled
- GEAR: NO
- SURFACE FINISH / TREATMENT: Satin
- LIMITED EDITION: 300 pieces (serial number on the blade in Roman numerals)