Precision spiral drill bit made of high-grade high-speed steel according to DIN 338, precision ground, cylindrical, right-hand cutting, type N. For drilling steels, cast steel, alloyed and unalloyed, grey cast iron, ductile cast iron, sintered iron, nickel silver, graphite, non-ferrous metals, plastic. Up to 900 N/mm² tensile strength. For highest demands and precision in industry and handcraft.