knives new life

PREVIOUSLY PURCHASED KNIFE, FROM A PRIVATE COLLECTION
* Origin: Acquired from a private seller, previously purchased
* Condition: Overall in excellent condition; opened and closed only a handful of times; never used for cutting
* Available on the market: Available
* Sharpening: Factory-sharpened
* Marks on blade: None
* Marks on handle: Minor marks on the handle’s anodized finish, near the release pins
* Box: Present and complete
* Sheath: /
* Manuals, Certificates, and Warranties: Present
* Inspected and Certified by our in-house laboratory

The Extrema Ratio RAO C is a compact folding knife derived from the iconic RAO II.

Thanks to its design, the RAO C is a tool that, despite its small size, manages to guarantee the same robustness and reliability as its larger counterpart while offering improved portability and handling.

The handle consists of two finely crafted anodized aluminum scales, to which Extrema Ratio applies a hard-anodizing treatment, making the handle more resistant to wear and corrosion.

Two steel frames help increase the handle’s sturdiness to withstand the most demanding uses.

The opening lock mechanism is particularly durable, as it is supplemented by a safety system that transforms it into a true fixed blade. The primary safety on the blade is activated by lifting and lowering the locking pin. To ensure maximum safety for the user, a practical and quick secondary safety has been added, which can be activated simply by moving the locking pin horizontally.

The reversible clip is designed to allow for concealed carry in a pocket, making the knife invisible from the outside.

The blade is made of Böhler N690 steel, hardened to 58 HRC, with the classic Extrema Ratio MIL-C-13924 black finish.

To lighten the steel frames, a laser-cut template based on the RAO C profile was created, which was then used to make a gadget included with the knife.

Intended use: Hiking / Tactical

Production type: industrial
Country of manufacture: Italy
Blade: N690Co stainless steel 58HRC
Blade finish: MIL-C-13924 burnishing
Handle: hard-anodized anticorodal
Blade length: 100mm.
Blade thickness: 4mm.
Closed length: 132mm.
Overall length: 225mm.
Weight: 239g.
Closure: Modified front lock, with additional push-button safety
Notes: Keychain gadget, featuring a miniature profile of the knife—a previously purchased knife from a private collection

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Origin: Withdrawn from a private collection, previously purchased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)

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Type: previously purchased
* Condition: in perfect mechanical condition, aesthetically shows some abrasion and signs of wear due to the passage of time
* Available on the market: iconic model from the early 2000s, now out of production
* Sharpness: Factory sharpness, could be improved
* Marks on blade: some minor abrasions due to age
* Marks on handle: cosmetic abrasions due to age
* Box: -
* Manuals, certificates, and warranties: -
* Checked and certified by our in-house laboratory

Directly derived from military specifications, this folding knife is designed to replace a fixed blade in the most demanding operational situations. To ensure maximum reliability, extremely robust materials, increased thicknesses, and a solid and secure back lock opening/closing system have been used.

A manual safety lock ensures maximum protection during use, drastically reducing the risk of accidental closure. When inserted in the closed position, it also prevents the knife from being immediately used against the operator in the event of theft.

Materials and workmanship
All components are machined from solid blocks using high-precision CNC machines, while assembly, adjustment, and sharpening are carried out by hand. The blade is made of N690 cobalt stainless steel, known for its high mechanical strength, great cutting ability, edge retention, and excellent corrosion resistance. It has a flat grind and a hardness of 58 HRC.

The scales are made of Anticorodal, an aluminum alloy that is highly resistant to stress and oxidation. The tang, made of hardened N690, acts as an effective emergency glass breaker. Screws, pins, and clips are made of burnished stainless steel, while the blade, lever, and tang are protected by Testudo treatment, which is highly resistant to abrasion and oxidation. The scales are black anodized.

Intended use: tactical/military

Blade: N690Co 58HRC stainless steel with burnished “testudo” finish
Country of manufacture: Italy
Blade length: 95mm.
Blade thickness: 6.3mm.
Closed length: 127mm.
Total length: 220mm.
Handle: Anticorodal, 4.5mm thick
Weight: 200g.
Closure: Back Lock with additional safety system, also functioning when the blade is closed
Clip: removable and reversible, stainless steel
Sheath: -
Notes: previously purchased knife from a private collection

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Origin: Withdrawn from a private collection, previously purchased and used
* Condition: Overall in good condition, with superficial cosmetic marks on the blade due to actual use, which in no way compromise its functionality and use
* Available on the market: On the market
* Sharpening: Resharpened
* Marks on blade: Several superficial cosmetic marks on the burnishing
* Marks on handle: None
* Box: Present and complete
* Sheath: Present and in excellent condition
* Manuals, certificates, and warranties: Present
* Checked and certified by our in-house laboratory

Born from the growing demand of demanding professionals, Extrema Ratio presents ONTOS—a field knife designed to tackle any challenge. The name, derived from the Greek word for “the thing,” represents the perfect synthesis of strength, versatility, and reliability. Compact but extremely durable, ONTOS is the ideal companion in any situation, thanks to its partially serrated blade that always guarantees a sharp, ready-to-use cut.

Its nylon thigh sheath, equipped with the MOLLE system, is designed to remain firmly anchored even in the most difficult conditions, when the soldier is forced to give up his primary tactical equipment. And for those looking for an extra level of preparedness, a survival kit is available, sold separately, to be attached directly to the knife sheath.

Intended use: Heavy Utility

Type of production: Industrial
Country of production: Italy
Blade: N690Co 58HRC stainless steel
Surface treatment: MIL-C-13924 burnishing
Handle: Forprene
Blade length: 168mm.
Blade thickness: 6.3mm.
Total length: 299 mm.
Balance: advanced
Weight: 411 g.
Sheath: nylon thigh sheath, modular, compatible with M.O.L.L.E. systems.
Packaging: Cardboard box with Extrema Ratio logos
Notes: knife previously purchased and used, from a private collection

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Origin: Collected from a private individual, previously purchased and used.
* Condition: Overall in very good condition with a few minor cosmetic signs of use that do not affect its functionality
* Commercially available: Commercially available.
* Sharpening: Factory.
* Marks on blade: Small aesthetic marks from use.
* Marks on handle: A couple of small cosmetic marks. 
* Box: Present
* Scabbard: Present
* Manuals, Certificates and Warranties: Present
* Checked and Certified by our in-house laboratory

Satre is a small, lightweight and extremely durable fixed-blade knife. Given its characteristics, it finds use in a wide range of disciplines and uses ranging from survival activities, bushcraft or as an element of an EDC (Every Day Carry) kit.

It was designed in collaboration with Daniele Dal Canto, Master Advanced F.I.S.S. (Italian Federation of Sport and Experimental Survival) instructor.

In Neck Knife mode, through the use of a 550 paracord lanyard, it can be held around the neck while keeping the knife upright with the handle facing down. Metal eyelets on the sheath made of pre-shaped Kydex allow for the attachment of both the lanyard and accessory holder.

The full-tang skeletonized design, allows the knife to be customized using Paracord as a handle covering

The Black S600 version uses Böhler S600 steel. This steel is used in industrial manufacturing to make metalworking tools and in mold making.

Satre S600 is hardened and cryogenically treated, thus achieving an exceptional hardness of as much as 64 HRC. This gives it great wear resistance and the ability to guarantee a long edge cutting edge.

Intended Use: Neck Knife / Hiking / Utility

Type of production: industrial
Country of production: Italy
Blade: Bohler S600 64HRC carbon steel
Blade treatment:Black EXP DARK
Handle:carbon steel Bohler S600 64HRC
Blade length: 70mm.
Blade thickness: 5mm.
Total length: 163mm.
Weight: 78g.
Scabbard:Kydex, for neck
Packaging: cardboard box with Extrema Ratio logos.
Notes: previously purchased and used knife, withdrawn from a private collection - possibility to use the sheath with Ulti-Clip, M.O.L.L.E. or Tek-Lok systems (can be purchased separately)

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Provenance: withdrawn from a private collection, previously purchased.
* Condition: New, never used, no original box
* Commercially available: Still in catalog, but now offered without “9th Col Moschin” logos on the blade
* Sharpening: Factory.
* Marks on blade: None
* Marks on handle: None
* Box: Absent
* Scabbard: Present, new
* Manuals, Certificates and Warranties: Present
* Checked and Certified by our in-house laboratory.

Commissioned and officially adopted in 2002 by the well-known 9th Incursor Rgt. “Col Moschin”, this model expresses the quintessence of the pure combat knife.

Inspired by the daggers with asymmetric blade and straight but oriented handle of the Arditi, from which the Regiment draws its vestiges, it has been reworked in a modern key. The center of gravity is strongly set back, the point particularly piercing. It is light, maneuverable and intuitive.

Every new raider gets one, every new raider is trained to use it to the fullest.

Intended use: Collector/Tactical/Military

Blade: N690Co 58HRC stainless steel with Desert Warfare finish
Handle: Forprene
Blade length: 160mm.
Blade thickness: 6.3mm.
Total length: 290mm.
Balance: set back, 1 cm. from the lower guard branch
Weight: 264g.
Sheath: Nylon, modular, thigh or belt, with removable inner plastic shell
Notes: previously purchased knife, from private collection

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

• Origin: Withdrawn from a private owner, previously purchased
• Condition: Overall in excellent condition
• Availability: Discontinued
• Sharpening: Original sharpening
• Blade marks: /
• Handle marks: Minor marks
• Box: /
• Sheath: /
• Manuals, Certificates, and Warranties: /
• Inspected and Certified: By our internal laboratory

The Extrema Ratio M.P.C. (Multi Purpose Compact) is an Italian-made folding knife designed to offer the durability of a fixed-blade knife in a compact and versatile format. Made with high-quality materials and precision techniques, it is ideal for tactical uses and field operations.

• Intended use: Tactical / Multi-role
• Production type: Industrial
• Country of origin: Italy
• Blade: Böhler N690 steel (58HRC)
• Blade finish: Testudo (brunished)
• Handle: Black anodized Anticorodal aluminum alloy
• Blade length: 113 mm
• Blade thickness: 6 mm
• Closed length: 149 mm
• Total length: 260 mm
• Closed thickness: 20 mm
• Weight: 240 g
• Locking system: Back lock with additional safety system
• Clip: Removable and reversible, brunished stainless steel
• Packaging: -
• Notes: The blade features partial serration for efficient cutting of cables and high-resistance fabrics.

The M.P.C. was developed to replace or complement a fixed-blade knife, combining the portability of a folder with the strength required for heavy-duty tasks. Its thick blade and robust locking system make it one of the most reliable tools in its category.

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.

Commissioned and officially adopted in 2002 by the renowned 9th Incursor Rgt. “Col Moschin,” this model expresses the quintessence of the pure combat knife. Inspired by the daggers with asymmetric blade and straight but oriented handle of the Arditi, from which the Regiment draws its vestiges, it has been reworked in a modern key. 

The center of gravity is strongly set back, the point particularly piercing. It is light, maneuverable and intuitive. Every new raider receives one, every new raider is trained to use it to the fullest.

Intended use: Collector/Tactical/Military

Blade: N690Co 58HRC stainless steel with Desert Warfare finish
Handle: Forprene
Blade length: 160mm.
Blade thickness: 6.3mm.
Total length: 290mm.
Balance: set back, 1 cm. from the lower guard branch
Weight: 264g.
Sheath: modular tactical, thigh or belt, Nylon
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
* 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

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Type: Previously Purchased
* Condition: Overall in good condition.
* Commercially Available Available.
* Sharpening: Factory.
* Marks on blade: A couple of light marks on burnishing.
* Marks on handle: Slight signs of wear on hardware and clip.
* Box: Present, but not in perfect condition
* Scabbard: -
* Manuals, Certificates and Warranties: Present
* Checked and Certified by our in-house laboratory


Intended Use: Tactical/Sporting

Production Type: Industrial
Country of Production: Italy
Blade: Stainless steel N690Co 58HRC
Blade Finish: Burnishing MIL-C-13924
Handle: Anticorodal (aluminum)
Blade length: 68mm.
Blade thickness: 4mm.
Length closed: 110mm.
Total length: 181mm.
Thickness when closed: 15mm.
Weight: 139g.
Closure: Liner Lock, with additional safety catch
Clip: stainless steel removable and reversible
Packaging: cardboard box with Extrema Ratio logos

Intended use: Collection

Type of production: Artisan by CIC Master Sergio Consoli
Production Lama: Italy
Blade: In spirograph damascus steel
Blade treatment: -
Handle: bronze bolsters, timascus with titanium spacers
Blade length: 95mm.
Blade thickness: 4mm.
Total length: 225mm.
Weight: 243g.
Closure: Liner Lock
Clip: titanium
Notes: Handmade by Master Sergio Consoli - knife number 454 made in 2018

Acknowledgments

Currently I make a limited number of knives a year and participate in some exhibitions, where among other things I have won my first prizes:

in 2005 at LAME SOTTO I PORTICI in Romano di Lombardia (BG) I was awarded as "best table on display"

always in the same year at the CULTER-EXPO in Novegro (MI) as "best folding knife"

I was also ranked second in the competition organized by the magazine LAME D'AUTORE as the best fixed hunting blade

then in 2007 at "Scarperia" I won the third prize for best folding

but above all again in 2007, to my great satisfaction, I reached the degree of MASTER OF THE ITALIAN KNIVING CORPORATION, a recognition received at the first exam.

Presentation of the craftsman

Creating a knife by hand is what I consider a real art form.
The satisfaction of seeing an object that comes from one's own hands, that takes shape and reaches mechanical, artistic and aesthetic perfection is what pays me back the most for all the hours of work and effort it takes to create a knife completely. by hand.

The passion for "cutting tools" has always been in me since I was a child and grew with me until the almost sudden decision to build my first knife myself, it was a "need", almost an inner necessity that I couldn't put off, my hands and my mind had to start creating, of course, what I had always been passionate about ... the knife!

I started at 40, in 2003, practically self-taught, I had no experience of manual work, but I had been a mechanical designer for many years and this allowed me to perfectly know the technique and all the various stages of mechanical processing.

Currently I am a member, with the rank of Master, which is the highest, of the Italian Knives Guild, an association recognized all over the world for the seriousness and above all quality of execution that all its members must maintain over time.

What I do now is what I consider my art form ..., to create "handcrafted, hunting and collectible knives".

They are knives made entirely by hand, only with an infinite series of files, a small drill for the holes and a sander for the concave grinding of the blades, nothing else!
I mainly make folding knives, which satisfy my desire to build perfect mechanical objects and perfection in the smallest details, even inside where they are not seen, is what distinguishes a knife created by hand, from one made industrially .

The mechanics then must be made in the best possible way, without counting the hours of work, only in this way the final result is guaranteed.

Of course, over the years I have refined my technique and currently I have improved the mechanics even more by inserting a system of ball bearings on the blade rotation, which guarantee an absolutely perfect seal and allow the blade to close and open without the slightest friction. and with an incredible sweetness.

With regard to the blades then, I am experimenting with new types of hardening, which give hardnesses of 62-63 HRC and allow an exceptional edge hold and cutting quality for all types of use.

I make practically all the knives on an initial design of mine, they are all unique pieces made completely by hand down to the smallest details, one at a time, only in this way, in my opinion, a knife can be considered "artisanal".

Regarding the materials I use, I can say that for the blades I prefer RWL34 steel which is sintered from powders and guarantees the total absence of internal defects, sometimes I also use damascus, both stainless steel and carbon, for the uniqueness 'that give the knife, since each damask is always different from another.

For the handles, one of the most beautiful materials is the mammoth tooth, which can be found in a variety of wonderful colors, I also use fossil mammoth ivory, various briars, titanium and carbon fiber.

Most of the knives, however, are made entirely of steel, in order to then be engraved, always and strictly by hand, to transform the knife even more into a real work of art ...

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Origin: Collected from a private individual, previously purchased and used.
* Condition: Used, with obvious cosmetic signs of wear and tear, in no way compromising its use
* Commercially available: Discontinued, demilitarized version, without attachments and with top sharpening removed
* Sharpening: Factory (can be improved)
* Marks on blade: Various signs of wear, cosmetic in nature.
* Marks on handle: Various signs of wear, cosmetic in nature.
* Box: Present, original, complete
* Scabbard: Present, original, used, in good condition.
* Manuals, Certificates and Warranties: Present
* Checked and Certified by our in-house laboratory

Intended use: tactical/military/multi-role

Blade: full tang in N690Co 58HRC stainless steel with front upper portion of blade NOT sharpened
Handle: detachable in Forprene
Blade length: 180mm.
Blade thickness: 6.3mm.
Total length: 310mm.
Balance: advanced, 1.5cm from the lower guard branch
Weight: 378g.
Sheath: modular tactical with thread cutter, thigh or belt, Nylon - includes diamond sharpener and magnesium fire starter

Sheath: modular tactical with thread cutter, thigh or belt, Nylon - includes a diamond sharpener and magnesium fire starter

Blade: 61HRC RWL34 Stainless Steel
Handle: Walnut, Damascus and Titanium
Blade Lenght: 75mm.
Blade Thickness: 4mm.
Overall Lenght: 180mm.
Weight: 110g.
Lock: Liner lock
Clip: -
Sheath: -
Notes: Handmade in Italy by CIC Master Sergio Consoli