Drill fi 2.8mm HSS Co for M3 threader

Professional cobalt drill bit for metal HSS-Co fi 2,8 mm collective package of 10 pcs. CNC PROFI HSS-Co drills are top quality drills that are made of HSS Co high speed steel with 5% cobalt content. They also contain chromium and molybdenum, which increases the drill bit's resistance to abrasion and high temperatures. The 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. Suitable for: machinable steels, cast iron, alloy steels, aluminum, stainless steels.