Use a left-hand drill bit to grip and remove the bolt. If that fails, try an easy-out extractor. For stubborn bolts, heat the surrounding area to expand the metal and break the rust bond.

When drilling metal, some of the biggest headaches ... right application for each bit type is essential. Cobalt left hand ...

Left-handed drill bits are always a good first approach to ... With a little bit of luck the surrounding metal will expand at a different rate than the broken bolt. Reapply penetrating oil to ...