Approved - knives withdrawn from private collections, checked, overhauled and certified by Coltelleria Collini

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 and used
* Condition: Overall in excellent condition, with slight superficial signs of wear from use that do not compromise its functionality in any way. The sharpening stone and steel included have also been used, with minimal signs of cosmetic abrasion.
* Available on the market: Available on the market
* Sharpening: Factory sharpened, with minor “field” sharpening with the included ceramic stone
* Marks on blade: Minor surface wear from use
* Marks on handle: None
* Box: Present
* Sheath: Present
* Manuals, Certificates, and Warranties: Present
* Checked and certified by our in-house laboratory

The “Extrema Ratio Sethlans” is a fixed blade utility knife designed to handle a wide range of situations, suitable for survival, bushcraft, prepping, but also as a backup blade. The Sethlans is available in two versions with two different types of steel.

The Black version uses D2 steel, heat and cryogenically treated to 60 HRC, which has a high regrindability even with makeshift tools. To give greater hardness and resistance, the blade is coated with the new Teflon-based product “EXP DARK” offered by Extrema Ratio.

The knife comes with G10 scales featuring the ergonomic design characteristic of Extrema Ratio handles. They can be removed to reveal the skeletonized structure of the knife, which allows for maximum lightness with minimum thickness. For lovers of extreme customization, the full-tang structure allows the handle to be coated with paracord.

The sheath is made of a lightweight, minimalist Kydex. It can be disassembled and adapted for both left- and right-handed users. The addition of an optional belt clip allows the knife to be positioned either vertically or horizontally and makes the sheath much more versatile than the textile version. It also comes with a mini pouch with a M.O.L.L.E. system containing a double-sided sharpening stone and a firesteel for lighting fires.

Intended use: Survival, bushcraft, prepping

Type: Fixed blade
Blade length: 107mm
Total length: 224mm
Blade thickness: 6.3mm
Sharpening: Flat edge
Weight: 207g
Blade material: D2 steel (60HRC)
Blade finish: EXP DARK
Handle: G10
Notes: designed in collaboration with Daniele Dal Canto, Master Advanced F.I.S.S.S. instructor (Italian Federation of Survival Sports and Experiments).

KNIFE RETIRED FROM PRIVATE COLLECTION
* Type: Previously Purchased
* Condition: In very good condition
* NO longer available on the market
* Sharpening: Factory
* Marks on blade: None
* Marks on handle: Very small marks
* Box: Present
* Sheath: -
* Manuals, Certificates and Guarantees: ER
* Checked and certified by our internal laboratory

Medium folding bag from the BD series. It is produced with an aluminum handle which enhances its characteristics of resistance and lightness, also thanks to the steel frame. The model maintains all the features of the BD2 updated with the new High Speed ​​Razor Opening system.

Intended use: Sports / EDC

Type of production: Industrial
Blade production: Italy
Blade: N690Co 58HRC stainless steel
Blade treatment: Satin
Handle: Anticorodal
Blade length: 95mm.
Blade thickness: 3mm.
Closed length: 128mm.
Total length: 224mm.
Closed thickness: 17mm.
Weight: 105g.
Closure: Liner Lock
Clip: removable in stainless steel
Packaging: cardboard box with Extrema Ratio logos
Note: -