Drill fi 4 mm HSS Co

Professional cobalt drill bit for metal HSS-Co fi 4 mm. The collective package is 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. They are designed for: machinable steels, cast iron, alloy steels, aluminum, stainless steel. Drill fi 12.5 mm HSSCo op.5 pcs. Drill fi 13 mm HSSCo op.5 pcs.