The Broken Bolt Extractor, with the help of a drill, extracts broken bolts in exhaust manifolds, engine blocks, cylinder heads and in other tools. The tool was first used by the military and helps remove bolts with original threads intact. The tool has different sized bushings that line up with the bolt, allowing a drill bit to drill down the center of the bolt. The kit comes with a case, a tap wrench, six hardened fixture washers and 14 plastic containers to hold tap, tap drill and drill bushings. Two sized kits are available.