High-quality HSS steel twist drill (DMO5) brightly ground, tip grinding: conical surface grinding, powerful ground twist drill made of high-performance high-speed steel, the completely ground twist drill has an increased concentricity, areas of application: steel, cast steel alloyed and unalloyed (up to 900N/mm² strength), gray, malleable, spheroidal and die-cast iron, sintered iron, nickel silver, graphite, short-chipping aluminum alloys, plastic, brass and bronze, PSHSS1-PSHSS33: pack of 2, PSHSS35-PSHSS130: pack of 1