Benchmade 4170BK Auto Fact is an effective spring knife that combines the style of Italian stiletto with the functionality of an edc knife and the reliability of tactical knives.
The knife has a slim 100 mm long blade , made of elite CPM-S90V stainless steel , which is subjected to hardening to a hardness of 59-61 HRC, optimal for EDC knives. CPM-S90V is a luxury stainless steel with a very high content of vanadium and carbon, which makes the blade extremely retention, very resistant to abrasion and corrosion. When choosing a hard steel knife, you should get a diamond sharpener, as sharpening with a standard ceramic whetstone can be very laborious and ineffective.
The blade with a usable spear point profile is covered with a black DLC (Diamond Like Carbon) protective coating . This wear-resistant carbon shield increases the external hardness of the steel, therefore it perfectly protects the blade against corrosion, wear and scratches.
A blade with such a profile is an excellent choice for people looking for a knife for everyday use. On the back section of the spine, transverse cutters were made, allowing for a stable support of the finger during cutting.
The thickness of the blade at its widest point is 2.8 mm, which is a compromise between the durability and functionality of the knife in everyday work.
The blade can be conveniently and quickly unfolded with one hand using the double-sided lock slider, thanks to which the knife is ready for work in no time. The Auto Axis-lock mechanism is responsible for work safety, valued for its high mechanical strength, resistance to dirt and ease of use.
The knife has an additional lock that protects against accidental unfolding of the blade while carrying it.
The knife has 6061-T6 aviation aluminum facings attached to steel reinforcement inserts. The elements that attract the attention of every knife enthusiast are carbon fiber inserts and polished spacer sleeves, discreetly emphasizing the luxurious nature of the knife. Thanks to the precise processing, the knife fits perfectly and fits perfectly in the hand. The semi-open handle design makes it easy to keep the knife clean.
Discreet carrying of the knife in a pocket is possible thanks to a high-mounted clip that can be mounted on both sides of the handle.