Drill fi 5.0mm HSS Co for M6 threader

Professional cobalt drill bit for metal HSS-Co fi 5 mm collective package contains 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 fi 5 mm 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.