25-piece HSS-Co (cobalt alloy) ProBox metal drill bit set, DIN 338, 135°

Suitable for alloyed and unalloyed steel up to a tensile strength of 1000 N/mm², stainless steel V2A/V4A, gray cast iron, cast steel, acid and heat-resistant steels. Precision drill bits with a strong heat resistance and wear resistance. For use in drill stand or pillar drills. The HSS Co-Bohrer are available in two qualities. The Topline drill bits for the highest requirements and the standard drill bits for professional use.