Our cobalt single end spotweld bits are made to effectively cut auto body panel spot welds. This bit features a special point to allow it to quickly bite into hard metals preventing it from "walking" and a flat on the shank for use in spotweld drills. The high red hardness of the cobalt steel allows for longer life and up to 30% higher speeds than regular high speed steel. Made in the USA by Norseman Drill & Tool.