115 PCS HSS Cobalt Drill Bit Set, Twist Jobber Drill Bits Set, 135-Degree Split
COBALT JOBBER DRILL BITS:115 pcs high speed steel with 5% cobalt drill bit set can resist high heat abrasion while drilling. M35 cobalt HSS twist...
Drill America D/A29S-CO-SET 29 Piece m42 Cobalt Screw Machine (Stub) Drill Bit
Ideal for portable or machine drilling. Screw machine drills are popular in the automotive and construction industries. Sizes smaller than #52 have the 118 degrees...
