5/16 Cobalt Jobber Drill Bits - HEAVY DUTY - M35 COBALT 12 ea.

5/16 Cobalt Jobber Drill Bits. Gold Finish. 4-1/2 inches OAL. Sold in packages of 12 cobalt drill bits. These heavy duty drill bits sport a 135 degree point a heavy duty web and a straight shank. These are M35 Cobalt drill bits. Using a 1/2 inch power drill these bits are suitable for Hardened Steel Stainless Steel High temperature Alloys Heat Treated Materials and Abrasive Plastics.