Speed Out™ extracts hard-to-remove screws or bolts in 10 seconds or less! Stymied by stripped threads and damaged fastener heads? Just insert the Speed Out™ bit into any 3/8" variable speed, reversible drill. Drill a starter hole in screw head, flip the bit, switch drill to “reverse” and watch the screw come out quickly and easily! Can be used with all screw types (flat, Phillips, hex). Works on wood and metal. Made of durable hardened steel. Set includes 4 bit sizes and storage case.