KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Origin: Acquired from a private collector, previously purchased
* Condition: Excellent, minor marks on the blade
* Commercial availability: Yes, smooth blade version only
* Box: Included
* Sheath: -
* Manuals, Certificates and Warranty: Included
* Inspected and certified by our in-house laboratory

The BF1 CD Drop Black by ExtremaRatio is a tactical folding knife designed for users who demand serious performance in a compact format. Its essential and functional design, combined with premium materials such as Böhler N690 steel and anodized aluminum, ensures durability, ease of handling, and reliability even in extreme conditions.

Ideal for EDC (Every Day Carry), military, or professional use, this model merges discreet elegance with operational robustness. The serrated blade version, not standard in the series, offers added versatility for tough cutting tasks without compromising structural integrity.

Intended use: tactical use / EDC (Every Day Carry)
Production type: high-end industrial production / specialized cutlery
Country of manufacture: Italy
Blade: Böhler N690
Blade finish: burnished (mil‑c‑13924 burnishing)
Handle: anticorodal anodized aluminum
Blade length: 69 mm
Blade thickness: 3 mm
Closed length: 107 mm
Total length: 171 mm
Closed thickness: ~12 mm
Weight: 88 g
Locking mechanism: Liner Lock
Clip: reversible tip-up clip, “wrap-around” on tang
Packaging: ExtremaRatio original box (rigid cardboard with logo)

Extrema Ratio – Made in Italy Tactical Excellence

Extrema Ratio is an international reference in professional tactical cutlery, official supplier to the Italian and French Armed Forces (NATO Code AD856). Every knife is designed for real operational use: selected materials, advanced treatments, and artisanal finishes guarantee robustness, precision, and reliability in all conditions.

Coltelleria Collini Guarantee: We have been a historic official Extrema Ratio dealer for over 25 years. We offer dedicated support, immediate availability, previews, and a catalog always updated with all the latest productions.

➡ Discover Extrema Ratio history, models, and news on our dedicated page