19pcs/25pcs set HSS Cobalt Drill Bit for Hardened Metal & Stainless Steel Drilling Bits Set 1.0~13mm Power Tools Accessories High Speed Steel

DRILLFORCE. Metric length, the best general purpose length for professionals and DIYers. General and Specialized Purpose, for tough materials that normal HSS bits cannot work. Cobalt bits make for some of the cleanest holes and the most durable drill bits, the surest bits for long-life and extended working hours on toughest materials. Straight Shank will fit in any common drill. 19pcs set: 1.0/1.5/2.0/2.5/3.0/3.5/4.0/4.5/5.0/5.5/6.0/6.5/7.0/7.5/8.0/8.5/9.0/9.5/10.0mm, total 19pcs drill bits. 25pcs set: 1.0/1.5/2.0/2.5/3.0/3.5/4.0/4.5/5.0/5.5/6.0/6.5/7.0 7.5/8.0/8.5/9.0/9.5/10.0/10.5/11.0/11.5/12.0/12.5/13.0mm, total 25pcs drill bits. DRILLFORCE Cobalt 1mm-13mm Metric Drill Bit 13pcs set, 19pcs set and 25pcs set. Twist drill bits are the standard type of bit for modern building construction and are built to be used on, but not limited to, most home fixtures and furnishings. DRILLFORCE provides the ideal twist drill bit with the following features: Cobalt is the longest lasting material