Sport, Military and Collectible Knives | Coltelleria Collini

The Böker Plus Extension Knife is a modern hunting knife that blends the tradition of the “extendable knife” with cutting-edge materials and finishes. Designed for those who demand reliability, power, and versatility in the field, it features a thick and solid D2 steel blade, a G10 handle with steel liners, and a custom-fitted Kydex sheath. This knife ensures durability, precision, and comfort even in the most demanding outdoor tasks.

Its solid locking system, using a large transverse pin, guarantees stability in both open and closed positions. The handle’s historical design recalls the double-T baselards of the 15th century, giving the knife a unique and iconic look. Ideal for hunting, camping, or discerning collectors, the Böker Extension Knife stands out for its outstanding performance and craftsmanship.

Intended use: Hunting, outdoor work, tactical/survival
Production type: Industrial / high-end series production
Country of origin: China
Blade: D2 steel, thick and solid construction
Blade finish: Stonewashed (satin/stonewash finish)
Handle: G10 with steel liners; double-plate handle, “double-T” design inspired by historical baselards
Blade length: 13 cm closed – 18.50 cm extended
Blade thickness: 5.00 mm
Closed length: 107 mm — not applicable as in folding knives
Total length: 23 cm closed – 30.90 cm extended
Closed thickness: 2.5 cm
Weight: 444.00 g
Locking system: Transverse pin lock; requires two hands to open
Clip: No clip; includes custom Kydex sheath
Packaging: Knife + custom Kydex sheath

Exclusive product created in collaboration with the PDT YouTube channel - The Cutthroat's Park. This unique knife was actually used in a field test that you can view directly in this product sheet.

To make it even more special, we engraved Floriano's autograph and the PDT logo on the blade. The box of the knife was also autographed by Floriano making it a must-have collector's item.

KNIFE FROM A PRIVATE COLLECTION
* Provenance: PDT YouTube channel.
* Condition: Overall in very good condition.
* Commercially available: By catalog
* Sharpening: Factory sharpened, stropped by Floriano after use.
* Marks on blade: Small signs of concrete use.
* Marks on handle: None
* Box: Present
* Scabbard: /
* Manuals, Certificates and Warranties: /
* Checked and Certified by our in-house laboratory

Intended Use: Sport/Utility

Production Type: Industrial
Country of Production: Taiwan
Blade: Stainless steel CPM-S35VN
Blade treatment: Satin finish
Handle: OD Green G10
Blade Length: 100mm.
Blade thickness: 5mm.
Total length: 240mm.
Weight: 195g.
Closure: Tri-Ad Lock
Clip: Reversible and removable, stainless steel
Packaging: cardboard box with Cold Steel logos
Notes: knife used in a YouTube video review by Floriano of PDT

This folding knife, created with renowned designer Andrew Demko, boasts a 12.7 cm blade made of S35VN steel, which offers exceptional edge retention and corrosion resistance.

The blade has a black stonewashed finish for added durability and elegance. The dark green, ergonomic G10 handle ensures a firm grip even in adverse conditions. Equipped with Cold Steel's Tri-Ad locking system, it ensures the blade remains secure during use.

With an overall length of 30.8 cm, a thickness of 4.8 mm, and a weight of 351 grams, the 5 Max is a sturdy and versatile knife, suitable for a wide range of tasks, from cutting through stiff materials to precision work. Ideal for tackling the toughest outdoor challenges, it perfectly combines style and substance.

Intended Use: Sporty / Hard Utility

Production Type: Industrial
Country of Production: Taiwan
Blade: Stainless steel CPM-S35VN
Blade Treatment: Black Stonewashed
Handle: G10 with internal stainless steel folders
Blade length: 130mm.
Blade thickness: 4.8mm.
Total length: 308mm.
Weight: 351g.
Closure: Tri-Ad Lock
Clip: Reversible and removable, stainless steel
Packaging: cardboard box with Cold Steel logos
Notes: Design by Andrew Demko

The Cold Steel SRK (Survival Rescue Knife) has been a Cold Steel pride for over 25 years. Favorite knife for many military operators, still supplied to Navy SEALs today during BUDS training.

It is therefore not surprising that Cold Steel, when commissioned in-house designer Andrew Demko to develop a high-end tactical folding knife for military applications, was inspired by the legendary SRK!

The SR1's sturdy heavy-duty blade is made from US 5mm premium CPM-S35VN sintered steel

A good blade needs a good grip, so this model of the SR1 is made from G10.

For added reliability and safety, Cold Steel has equipped the SR1 with the famous Tri-Ad locking mechanism - proven time and again to be perfect for heavy-duty use.

Intended use: Sports / Utility

Type of production: Industrial
Country of production: Taiwan
Blade: CPM-S35VN stainless steel
Blade treatment: Stone Wash
Handle: OD Green G10
Blade length: 100mm.
Blade thickness: 5mm.
Total length: 240mm.
Weight: 195g.
Closure: Tri-Ad Lock
Clip: Reversible and removable, in stainless steel
Sheath: -
Packaging: cardboard box with Cold Steel logos
Note:

Intended use: collection

Type of production: mid tech
Country of production: USA
Blade: CPM-154CM stainless steel
Blade treatment: Blackwash
Handle: Aluminum
Blade length: 94mm.
Blade thickness: 5mm.
Length closed: 130m.
Total length: 226mm.
Thick when closed: 16mm.
Weight: 128g.
Closing: Plunge Lock
Clip: in steel
Notes: numbered series
Packaging: in cardboard with Brian Tighe and Friends logos, Design by Brian Tighe, opening system on IKBS type ball bearings with Carson Flipper type opening

Destination of use: collection

Type of production: semi-custom
Lama production: USA
Blade: 154CM stainless steel
Lama treatment: Satin
Handle: G10
Blade length: 94mm.
Blade thickness: 5mm.
Length closed: 130m.
Total length: 226mm.
Thick when closed: 16mm.
Balancing: -
Weight: 134g.
Closing: Plunge Lock
Clip: in steel
Notes: numbered series
Packaging: cardboard with logos Brian Tighe and Friends, Design by Brian Tighe, opening system on ball bearings of type IKBS with Carson Flipper opening