The Extrema Ratio BF1 CT Black is a basic folding knife designed for everyday use, known for its simplicity, essential features, and functionality. This knife is available in two blade configurations: Tanto and Drop, and two handle configurations: Classic and Tactical.

The "tactical" handles feature a design with concentric circles and perforations for weight reduction and improved grip. On the other hand, the "classic" handles are solid with recessed planes to keep the opening pins flush with the closed knife profile.

All blades are blackened through a process of zirconium carbonitriding, while the handles are blackened through high-thickness anodic oxidation. The blades have a flat grind and particularly thick and sturdy tips, a distinctive feature of the series.

An innovative feature of this knife is the reversible clip positioned on the back of the blade. This clip wraps around the inside of the knife so that when inserted in a pocket, the tang remains hidden while the clip remains visible. The blade locking mechanism uses the proven "liner lock." In this version, the knife is equipped with a Tanto blade.

Technical Specifications:

• Weight: 85 grams
• Blade Length: 70 mm
• Total Length: 170 mm
• Main Blade Thickness: 3 mm
• Blade Material: N690 (58HRC)
• Handle Material: Anticorodal
• Partial Serration: No
• Blade Locking Mechanism: Liner Lock
• Safety: No
• Finishes and Treatments:
  • Handle: Anodized
  • Blade: MIL-C-13924 Blackened

The Extrema Ratio BF1 CT Black is the ideal choice for those seeking a reliable, robust, and highly functional knife for everyday use and situations that demand versatility.

SAFETY & USAGE NOTES (GPSR / Italian compliance)

Minimum purchase age in Italy: 18 years.

Intended use: use only for cutting tasks and activities consistent with the tool’s design; do not use as pry bar, hammer, chisel or for improper purposes.

Carry/transport: comply with local laws on carrying knives; store safely when not in use.

Maintenance: wipe blade with a soft cloth; avoid aggressive cleaners; dry thoroughly before storage; use light oil if needed in humid environments.

Mechanical safety: check frame lock operation and screw tightness regularly; do not modify or tamper with locking mechanism.

Tampering prohibited: do not disassemble, alter or tamper with any component; unauthorized changes void warranty and may create safety hazards.

If damage or malfunction occurs, stop using and contact qualified service.

Dispose of packaging and metal parts according to local regulations.