Century Drill & Tool Cobalt Pro Grade Drill Bit 31/64″ Overall Length 5-7/8″

Made from M35 steel with 5% cobalt, Century’s Cobalt drill bits are designed to cut through extremely hard metals, including stainless steelNo center punch needed: Century 135-degree quick-cut points are self-centering and penetrate faster with less pressure…will not “walk” or “wander” at the starting surfaceExtremely heat resistant, must be used and operated in power units that have a RPM speed of 1,500 or more for maximum efficiencyMade in the U.S.A.