Knife - Essential Tool for Camping, Outdoor Adventure and collection

T4000 S Ranger Limited Edition is a limited series version of only 100 pieces based on the T4000 model, a reworking of the Japanese Wakizashi short sword that the Samurai carried at all times in contact with the body.

It is a timeless tactical tool that follows no fashion but faithfully adheres to the Extrema Ratio philosophy aimed at fulfilling all functional requirements.

This model continues Extrema Ratio's purest Tanto series designed especially for lovers of the Japanese blade profile, who do not want to give up typical tactical accessories such as textile sheath and special polymer handle.

The blade, made of Böhler N690 steel hardened to 58 HRC and burnished to MIL - C- 13924, features Geotech Camo customization, Extrema Ratio's innovative and original camouflage pattern made by laser engraving.

The grip, in HCS coloring, is made of Forprene, an elastomer that is part of the "NATO standard" due to its exceptional resistance to extreme conditions.

The black-colored Cordura sheath is and equipped with MOLLE system that allows its carrying on tactical vests and general belts and guarantees the safe carrying of the razor-sharp blade by protecting it from shocks that could reduce its efficiency.

The T4000 S Ranger Limited Edition comes in an IP67-certified watertight Polypropylene technical case with pressurization valve that is weather, dust and shock resistant. Also inside is a double-grit sharpening plate (ceramic abrasive and synthetic diamond) and a metal plaque with the numbering of the limited series of 100.


Intended Use: Tactical/Collection

Type of production: Industrial
Country of Production: Italy
Blade: Bohler N690Co stainless steel at 58HRC
Blade Finish: Burnishing MIL-C-13924 with Geotech pattern
Handle: Forprene
Blade length: 174mm.
Blade thickness: 4mm.
Total length: 304mm.
Weight: 264g.
Sheath: Nylon
Packaging: Polymer case, diamond and ceramic sharpener, Limited run of only 100 pieces

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.

Exclusive limited edition series in collaboration with INSTRUCTOR ZERO (Team Zero International Training Security Company), renowned firearms training specialist, risk analyst and strategic consultant working worldwide for both military and law enforcement specialized units and government agencies.

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Provenance: withdrawn from private collection, previously purchased.
* Condition: New, never used
* Commercially available: Discontinued, limited run of only 33 numbered pieces
* Sharpening: Factory sharpened
* Marks on blade: None
* Marks on handle: None
* Box: Present
* Scabbard: /
* Manuals, Certificates and Warranties: Present
* Checked and Certified by our in-house laboratory

Intended Use: Tactical / Collection

Production type: Industrial
Country of Production: Italy
Blade: Stainless steel N690Co 58HRC
Blade Treatment: Testudo MIL-C-13924
Handle: Anticorodal
Blade Length: 68mm.
Blade thickness: 4mm.
Length closed: 110mm.
Total length: 181mm.
Thickness when closed: 23mm. (15mm without clip)
Weight: 139g.
Closure: Liner Lock with additional safety catch
Clip: Stainless Steel
Packaging: watertight plastic box with Extrema Ratio and Team Zero logos, Warranty Certificate, Velcro Patch, Limited edition made in only 33 pieces

Katla, designed by Jesper Voxnaes, is a liner lock folding knife, which brings back the Tanto profile blade with a bevel that enhances the excellent cutting qualities.

The rotation mechanism is provided by thrust bearings, and it can be opened with either the double thumb stud or the very fast flipper.

The detail that characterizes the Katla is the 3D processing of the handle at both ends of the bolster, which reinterprets in a modern way, the inlays of the classic Viper models.

The flat edges and the titanium clip allow for comfortable and discreet carry.

Intended use: EDC / Sport

Type of production: Industrial
Country of production: Italy
Blade: Super Dense Twist stainless Damascus
Blade finish: Satin
Handle: Dark matter carbon fiber
Blade length: 82mm.
Blade thickness: 4mm.
Closed length: 116mm.
Total length: 198mm.
Weight: 122g.
Lock: Liner Lock
Clip: Titanium
Packaging: Deluxe cardboard box with Viper logos
Notes: Design by Jesper Voxnaes - opening with Carson Flipper system on ball bearing - Damascus SSCT spacer - limited edition of 100 pieces

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: Collection / Sportsman

Type of production: Industrial
Country of Origin: Taiwan
Blade: 440C steel
Blade treatment: satin finish
Handle: rayskin and cotton
Blade Length: 235mm.
Blade thickness: 6.5mm.
Total Length: 375mm.
Weight: 527g.
Sheath: in leather
Packing: gift box with guarantee certificate and microfibre cloth for cleaning
Notes: Limited edition number edition in 1999 - Design by Wally Hayes

Intended use: Tactical / Military / Collection

Type of production: Industrial
Country of production: Italy (by Lion Steel - Maniago)
Blade: stainless Niolox
Blade treatment: Blackwash
Handle: Anodized Titanium 6Al4V
Blade length: 113mm.
Blade thickness: 5mm.
Closed Length: 147mm.
Overall length: 240mm.
Thick when closed: 14mm.
Weight: 240g.
Lock: Frame Lock with stainless steel swing and integrated security system Rotoblock
Clip: Removable, burnished stainless steel
Packaging: Cardboard box with a nylon bag zip, patch velco Pohl Force and warranty certificates numbered
Notes: Edition limited and numbered edition for only 200 numbered copies of the blade, box and certificate

Use: Tactical / EDC

Type of production: Industrial
Production Blade: 100% USA
Blade: Stainless steel sintered CPM-154CM
Treatment Blade: Texas Tea
Handle: Titanium brushed
Blade length: 76mm.
Blade thickness: 4.7mm.
Overall length: 190mm.
Thickness when folded: 12mm.
Balancing: -
Weight: 115g.
Lock: Frame Lock
Clip: Removable and reversible, stainless steel
Sheath: -
Packaging: Cardboard box with logos Quartermaster
Notes: Specimen edition liminata individually numbered on the blade and box

Intended use: Tactical

Type of production: Industrial
Production Lama: 100% USA
Blade: stainless steel sintered CPM-S35VN
Treatment Lama: DLC
Handle: G-10 and stainless steel
Blade length: 101mm.
Blade thickness: 4.5mm.
Overall length: 223mm.
Thick when closed: 14mm.
Balancing: -
Weight: 210g.
Closure: Frame Lock
Clip: Removable and reversible, stainless steel
Sheath: -
Packaging: Cardboard box with logos Quartermaster
Note: Opening system on ball bearings ORB Pivot System - Exemplary liminata edition individually numbered on the blade and box

Intended use: Tactical

Type of production: Industrial
Production Lama: 100% USA
Blade: stainless steel sintered CPM-S35VN
Treatment Lama: -
Handle: G-10 and stainless steel
Blade length: 101mm.
Blade thickness: 4.5mm.
Overall length: 223mm.
Thick when closed: 14mm.
Balancing: -
Weight: 210g.
Closure: Frame Lock
Clip: Removable and reversible, stainless steel
Sheath: -
Packaging: Cardboard box with logos Quartermaster
Note: Opening system on ball bearings ORB Pivot System - Exemplary liminata edition individually numbered on the blade and box

Intended use: Tactical / EDC

Type of production: Industrial
Production Lama: 100% USA
Blade: stainless steel sintered CPM-154CM
Treatment Lama: Limo Tint Full Black
Handle: G-10
Blade length: 70mm.
Blade thickness: 5mm.
Overall length: 178mm.
Thick when closed: 17mm.
Balancing: -
Weight: 190g.
Closure: Subliminal Frame Lock
Clip: Removable and reversible, stainless steel
Sheath: -
Packaging: Cardboard box with logos Quartermaster
Note: Opening system on ball bearings ORB Pivot System - Exemplary liminata edition individually numbered on the blade and box

Intended use: Tactical / Neck

Type of production: Industrial
Production Blade: 100% USA
Blade: Titanium Beta
Treatment Blade: -
Handle: -
Blade length: 50mm.
Blade thickness: 4mm.
Total length: 76mm.
Thick when closed: -
Balancing: -
Weight: 18g.
Closure: -
Clip: -
Sheath: Kydex, thermoformed vacuum neck
Packaging: Cardboard box with logos Quartermaster
Notes: -

Intended use: Tactical

Type of production: Industrial
Production Blade: 100% USA
Blade: Stainless Steel sintered CTS-BD4P
Treatment Blade: Texas Tea
Handle: G-10
Blade length: 89mm.
Blade thickness: 5mm.
Overall length: 241mm.
Thick when closed: 13mm.
Balancing: -
Weight: 213g.
Lock: Frame Lock
Clip: Removable and reversible, stainless steel
Sheath: -
Packaging: Cardboard box with logos Quartermaster
Notes: Opening system on ball bearings ORB Pivot System - Exemplary liminata edition individually numbered on the blade and box

Intended use: Tactical / EDC

Type of production: Industrial
Production Blade: 100% USA
Blade: Stainless steel sintered CPM-154CM
Treatment Blade: Stone Washed
Handle: G-10
Blade length: 70mm.
Blade thickness: 5mm.
Overall length: 178mm.
Thick when closed: 17mm.
Balancing: -
Weight: 190g.
Closure: Subliminal Frame Lock
Clip: Removable and reversible stainless steel
Sheath: -
Packaging: Cardboard box with logos Quartermaster
Notes: Opening system on ball bearings ORB Pivot System - Exemplary liminata edition individually numbered on the blade and box

Intended use: Tactical / EDC

Type of production: Industrial
Production Blade: 100% USA
Blade: Stainless steel sintered CPM-154CM
Treatment Blade: Texas Tea Stone Washed
Handle: G-10
Blade length: 70mm.
Blade thickness: 5mm.
Overall length: 178mm.
Thick when closed: 17mm.
Balancing: -
Weight: 190g.
Closure: Subliminal Frame Lock
Clip: Removable and reversible stainless steel
Sheath: -
Packaging: Cardboard box with logos Quartermaster
Notes: Opening system on ball bearings ORB Pivot System - Exemplary liminata edition individually numbered on the blade and box