Kershaw Launch 4 7500BLK is a compact automatic knife , equipped with a blade made of American CPM 154 stainless steel , a discreet unfolding button and streamlined anodized aluminum cladding. Tool steel The knife has a blade with a length of 86 mm, made of hard 154CM tool steel , which is subjected to hardening to a hardness of 58-60 HRC, which is optimal for EDC knives . 154CM is molybdenum-added stainless steel with a very high carbon content, which can be described as an improved version of 440C. American steel is particularly valued for its corrosion and wear resistance (high impact strength), long-term sharpness and relative ease of sharpening. Utility blade The short blade with a symmetrical spear-point profile is fully covered with a black DLC (Diamond Like Carbon) protective coating. This abrasion-resistant carbon coating increases the external hardness of the steel, which is why it perfectly protects the blade against corrosion, wear and scratches. Thanks to the use of a sharp point, flat grind and a cutting edge with a gently rounded line, the knife easily penetrates and has excellent cutting properties . The thickness of the blade at its widest point is 3 mm, which is a compromise between the durability and functionality of the knife in everyday work. Automatic unfolding The most important element of the automatic knife is its extremely comfortable and easy unfolding system . Unlike models with an assisted blade, in an automatic knife, unfolding the blade requires only pressing the button , which is responsible for releasing the lock and activating the internal spring. Folding the blade requires pressing the button again and manually retracting the blade. Such functionality makes the "automatics" very popular among soldiers, employees of uniformed services and a rapidly growing group of EDC enthusiasts. The release button is embedded in a milled notch, so it does not protrude above the handle, which in turn effectively prevents accidental unfolding of the blade. When using the automatic knife, it is recommended to exercise extreme caution and prudence . Light handle The knife has ergonomic linings made of anodized aircraft aluminum 6061-T6 forming a monolithic whole with the backspacer. The anodized coating is resistant to fading, scratching and abrasion, which guarantees the attractive appearance of the knife for a long time. The profiled shape of the grip makes the knife very comfortable and stable in the hand, despite its small size. The discreet carrying of the knife in the pocket is possible thanks to the standard clip without the possibility of relocation. Basic information Blade profile Spearpoint Steel hardness [HRC] 58-60 Blade lock type auto-lock Knife type folding Opening type button Steel type stainless - 154CM Additional data Wearable clip Is Cladding material metal - anodized aluminum Corrosion resistance high Dulling resistance All right Cut type flat Dimensions Total length [mm] 130 Blade length [mm] 48 Folded length [mm] 81 Blade thickness [mm] 3 weight [g] 51