Features 1、FAST CUTTING: Spiral chip removal design bring smooth chip removal. Smooth and of sharpness grooves provide fast cutting and high drilling efficiency 2、OF SHARPNESS: Adopt high quality high speed steel material, possess high hardness, stable performance, of sharpness and durable 3、PROCESS METAL MATERIALS: Using 118° acute angle design, bring fast and accurate drilling, saving time and effort, suitable for processing metal materials 4、FINELY SHARPENED CUTTING EDGE: The cutting edge is finely sharpened to meet different cutting accuracy, with high work efficiency 5、FOR VARIOUS MATERIALS: Suitable for iron, aluminum, copper, stainless steel, high speed steel, manganese steel, various hardened steel parts Specification Item Type: Reduced Shank Drill Bit Product Material: High speed steel Blade Diameter: Approx. 13.5mm / 0.53in Shank Diameter: 1/2in Drill Bit Total Length: Approx. 145mm / 5.71in Uses: Suitable for iron, aluminum, copper, stainless steel, high speed steel, manganese steel, various quenched steel parts Package List 1 x Reduced Shank Drill Bit