Includes 25 drills from 1 mm to 13 mm x 0.5 mm in a plastic case.Top angle of 135° 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 designed for use in drill stands and drill drivers.The cobalt high-speed steel (HSS) provides long lasting high performance when drilling in stainless steel materials.Cobalt drills work good in following materials alloyed/non-alloyed steel, stainless steel, cast iron, cast steel and acid- and heat-resistant steels.Manufactured to DIN 338 N