Drill fi 8.5mm HSS Co for M10 threader

Professional cobalt drill bit for metal HSS Co fi 8,5 mm . The collective package is 10 pcs. CNC PROFI HSS Co drills are top quality drills that are made from HSS Co high speed steel with 5% cobalt content. They also contain chromium and molybdenum, which increase the drill bits' resistance to abrasion and high temperatures. The HSS Co drill has a hardness of 64 HRC and retains it at high temperatures. Professional cobalt drills are recommended for machining hard acid-resistant steel and for machining hard-to-cut steels. They are designed for: machinable steels, cast iron, alloy steels, aluminum, stainless steels.