Feature:1. [SPIRAL CHIP FLUTE] Spiral type chip removal design, with glossy and incisive flute position, and fast chip removal.2. [HIGH SPEED STEEL] Made of excellent high speed steel material, with high hardness, wear resistance and stable performance.3. [118° EDGE ANGLE] The drill bit has 118° incisive edge angle for accurate positioning and glossy cutting.4. [WITH 1/2IN SHANK] With standard 1/2in small straight shank, easy to install, and not easy to fall off or loose during use.5. [APPLICABLE MATERIALS] Used for iron, aluminum, copper, stainless steel, high speed steel, manganese steel and various hardened steel parts.Specification:Item Type: Drill BitMaterial: High Speed SteelBlade Diameter: Approx. 22mm / 0.9inUses: Suitable for iron, aluminum, copper, stainless steel, high speed steel, manganese steel, various quenched steel partsPackage List:1 x Drill Bit