Cobalt drill bits 14-25.5 mm (8 pieces). Brand: KRAFT&DELE. This professional set of 8 cobalt drill bits is designed for demanding industrial and workshop applications. The bits are made of HSS-Co steel with a cobalt content of 5%, which ensures high durability and resistance to heavy use when processing various materials. The set is perfect for drilling steels in hard and non-alloy alloys, stainless and acid-resistant steel, titanium alloys, cast iron, bronze, metal powder, as well as wood and pl...