Product reviews for Draper Expert 2164ampquot Cobalt Twist Drill Bit for Helicoil Thread Repair Kits
Draper Expert 21/64" Cobalt Twist Drill Bit for Helicoil Thread Repair Kits
Expert Quality, a selection of imperial-sized high speed steel straight shank drills (with 5% cobalt) for specifically drilling out damaged threads prior to insertion of a Helicoil® insert. The addition of cobalt to HSS adds streng...