Heavy Duty Screw Extractor And Left Hand Drill Bits Set, Cobalt Tool Steel Broken Bolt Removers Stripped Screw Ejectors No Sweat Wrenching Kit With Center Punch For Shop Crews

Heavy Duty Cobalt Screw Extractor And Drill Bit Set
✔️ 15 Piece Cobalt HSS Bits With CR-MO Extractors And Case

This 15-piece screw removal kit pairs heavy-duty cobalt left-hand drill bits with chrome-molybdenum extractors to help you pull out stripped bolts, broken studs, and damaged fasteners without damaging surrounding material. Shop crews and mechanics rely on this tool set for stubborn engine repairs, frame work, and general machine maintenance tasks.

✅ 6542 high-speed steel construction offers superior wear resistance and longer service life compared to standard tools
✅ 135 degree split point tip provides faster penetration and cleaner starts for accurate hole placement in hardened metal
✅ Includes five matching sizes of 1/8 in, 5/32 in, 3/16 in, 1/4 in, and 19/64 in diameter extractors and drill bits
✅ Chrome-molybdenum ejectors deliver high torque strength to clear seized threads and prevent breaking during tough jobs
✅ Comes complete with a center punch for marking drive spots and fits everything securely in a portable storage case

💡 How do I remove broken bolts stuck in fragile engine blocks with a screw extractor set?

Using a left-hand drill bit and extractor combo is a handy trick for clearing out seized fasteners without stripping the surrounding threads further.

- Drive the cobalt bits counter-clockwise so the rotation forces the extractor spiral to bite tighter against the bolt head while peeling away material.
- Select the bit closest to the shank diameter of the remaining fragment to maximize grip surface and reduce the risk of snapping the tool mid-operation.
- Apply steady pressure with a hand tap wrench or low-speed drill to manage heat buildup and extend the lifespan of the hex shanks during extraction.