KnKut spot weld drill bits are designed to effectively cut auto panel spot welds. Made of cobalt steel, the high red hardness permits speeds 30 percentage greater than high speed steel spot weld drills. Cobalt steel is substantially more abrasion resistant, resulting in a very long lasting cutting edge. KnKut spot weld drill bits have a spur point, designed to cut through the weld on one panel while leaving only a slight penetration into the second panel. The modified point is chip resistant.