Century Drill & Tool 21 Piece Pro Grade Cobalt Drill Bit Set 26121

Century's Pro-Grade, USA made cobalt drill bits are made from M35 steel with 5% cobalt and designed to through extremely hard metals, including stainless steel. No center punch needed: No center punch needed: Century's 135° quick- points are self-centering and penetrate faster with less pressure. Drill bit will not "walk" or "wander" at the starting point. Extremely heat , must be used and operated in power units that have a RPM speed of 1,500 or more for maximum efficiency. 21 piece muti-purpose set. Made from M35 steel with 5% cobalt, Century's Cobalt drill bits are designed to through extremely hard metals, including stainless steel. No center punch needed: Century's 135° quick- points are self-centering and penetrate faster with less pressure. Drill bit will not "walk" or "wander" at the starting point. Extremely heat , must be used and operated in power units that have a RPM speed of 1,500 or more for maximum efficiency. Made in the U.S.A.Set includes: 1/16" to 3/8" by 64ths drill bits.