Knife - Essential Tool for Camping, Outdoor Adventure and collection

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

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Origin: Iconic knife from 1981, withdrawn from a private collection, previously purchased
* Condition: Overall in good condition, mechanically perfect, shows some signs of wear on the nickel silver handle and micarta inserts; the blade shows signs of mechanical friction on the back due to opening and closing in the handle
* Available on the market: Not available, craftsman no longer in business
* Sharpness: Factory sharp
* Marks on blade: Small marks due to age and friction when opening and closing the blade
* Marks on handle: Several signs of wear visible on the nickel silver handle and micarta inserts
* Box: -
* Sheath: -
* Manuals, Certificates, and Warranties: 1981 warranty certificate from Coltelleria G. Lorenzi in Via Montenapoleone, Milan
* Checked and certified by our in-house laboratory

In the 1980s, Jimmy Lile developed an elegant folding knife with a button lock mechanism, known as the “Lile Lock.” This patented system consists of a front button on the handle that unlocks the blade when opening and locks it in the cutting position, ensuring safety and ease of use. The monolithic nickel-silver guides support the D2 steel blade, while the micarta inserts on the scales give the knife a refined look.

This is a generously sized knife, produced in limited quantities between the 1970s and 1980s. The numbered examples bearing engravings such as the patent number 4148140 are now highly sought-after collector's items of great economic value.

This folding model represents a perfect balance between functionality and collectible design: compact and easy to handle, with a reliable lock, high-quality materials, and meticulous details, embodying Lile's attention to craftsmanship even in a context other than the famous survival knife.

Intended use: Collectible / Sports

Type of production: Entirely handmade
Country of production: Arkansas / USA
Blade: D2 steel
Blade treatment: Satin finish
Handle: Nickel Silver handle with Red Micarta inserts and stainless steel rear spacer
Blade length: 90mm.
Blade thickness: 4.5 mm.
Closed length: 124 mm
Total length: 212 mm.
Weight: 198 g.
Closure: Lile Lock (Button Lock)
Packaging: supplied with a 1981 warranty certificate from the historic “Coltelleria G. Lorenzi” in Via Montenapoleone, Milan
Notes: extremely rare knife from 1981, previously purchased, withdrawn from a private collection, serial number 447 engraved on the blade and patent number “U.S. Patent No. 4148140” engraved on the back of the button lock.

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