Size range 0.5 mm to 20 mm.Top angle of 130° with self-centring split-point tip for quick cutting and perfect centring.Drill bits have a cylindrical shank (shank equal to drill bit diameter) and are designed for use in drill stands and drill drivers.High-speed steel (HSS) drill for drilling in bronze, brass, carbon steel, cast iron, alloy steel and stainless-steel.Manufactured to DIN 338 N