Description
obalt drill bit made of HSS M35 steel and 5% cobalt that gives it extra strength. The low loss of sharpening and wear allows these bits to obtain high durability. Heads with two edges machined in 135º provide greater support. The tips are ground and amber finish. Each cobalt drill bit in our range is manufactured under DIN340 extra long size. The use of drill holes for cutting is suitable for better performance. We recommend the drill or cooling oil.