- BF1 CD Black an extremely efficient EDC folder. Slim ultra-lightweight at 88g, and easy to carry, these are defining features of Basic Folder series. Blade made from N690 steel. Handle crafted from anodized aluminum. Sturdy metal clip for convenient carry

This product is intended for use only by adults with knowledge and experience in handling sharp cutting tools. Improper use of the knife can result in serious injuries. The blade is extremely sharp and can easily cut through skin and tissue; therefore, extra caution should always be exercised while cutting, and hands should be kept away from the cutting edge. To prevent the knife from slipping, it is recommended to cut on a stable, non-slip surface and avoid excessive force, which may cause uncontrolled blade movement.
Leaving the knife on the edge of a table, countertop, or in easily accessible places—especially where children are present—poses a significant safety risk. The knife should always be properly secured after use, ideally by placing it on a stable surface or storing it in designated knife blocks, protective sheaths, or magnetic strips. The knife should never be used for tasks it is not designed for, such as opening cans or prying objects, as this can damage the tool and lead to dangerous accidents.
A dull blade increases the risk of injury, as it requires more force and is more likely to slip from the material being cut. Therefore, it is essential to sharpen the knife regularly to maintain optimal sharpness. Additionally, proper cleaning and drying of the knife are necessary to prevent corrosion and bacterial growth. Periodic inspection of the handle and blade is recommended to check for cracks, chips, or looseness. If any damage is detected, the knife should be repaired or replaced immediately.
When using the knife, focus solely on the task at hand—avoid talking on the phone, watching television, or other distractions while cutting. Ensure proper lighting in the workspace for better visibility and control. Please note that some countries or regions have laws restricting the ownership and carrying of knives. Before purchasing or using this knife, verify that its use is legal in your location according to applicable regulations.
Following these safety guidelines will help ensure safe and effective knife use, minimizing the risk of accidents and extending the lifespan of the tool.
BF1 CD Black Aluminium, Black MIL-C is a slim, ultra-lightweight folding knife at just 88 g, and easy to carry—hallmarks of Extrema Ratio's Basic Folder series. It is both an excellent tool and an exceptionally efficient E.D.C. folder. Its cutting capabilities are surprisingly impressive given its compact size.
N690 - corrosion-resistant, high-carbon 1.07% (C), martensitic chromium steel 17.30% (Cr) with molybdenum 1.10% (Mo), vanadium 0.10% (V) and cobalt 1.50% (Co) for structural uniformity. Features exceptionally high corrosion resistance and long edge retention. One of the best tool steels in the world today. It achieves a hardness of 57-60 HRC. Manufactured by Böhler Edelstahl in Kapfenberg, Austria.
Blade - an extremely sharp Drop Point with a pronounced belly, coated with a scratch-resistant, non-reflective matte MIL-C-13924 BURNISHING finish. The smooth Plain edge features a flat grind, providing durability, excellent cutting edge geometry, and extreme cutting performance. The blade is equipped with a dual-sided Thumb Stud for easy opening. A solid Liner-Lock mechanism ensures secure blade locking.
Handle - stainless steel liners and anodized aluminum scales provide both lightness and structural durability. The open-back design simplifies cleaning and maintenance. A robust, ambidextrous, bridge-shaped metal clip allows for discreet deep-pocket carry in the tip-up position (blade tip facing up). The clip also serves as a convenient thumb rest, especially for users who prefer a reverse grip.
Technical specifications:
Product number: 04.1000.0143/BLK
Name: BF1 CD Black Aluminum, Black MIL-C
Overall length: 171.0 mm / 6.70"
Blade length: 69.0 mm / 2.70"
Blade thickness: 3.0 mm / 0.12"
Handle length: n.d.
Weight: 88.0 g / 3.10 oz
Blade material: Böhler N690
Blade hardness: 58 HRC
Blade grind: Flat
Blade finish: Black MIL-C-13924 BURNISHING
Handle material: Anticorodal Anodizes Aluminum
Handle color/finish color: Black
Designer: Extrema Ratio
Brand name: Extrema Ratio
Manufacturer: Extrema Ratio, Italy
Country of origin: Italy
Developed by: the Sharg® company