Removes any stripped screw or broken bolt, including Phillips, flat, hex, or painted, in 10 seconds or less. 3 easy steps: drill out, flip bit, extract. Durable hardened steel construction. Works with any drill and is quick and easy to use. Self-centering tip prevents walking. Compatible with Quick Connect chuck systems. Great for carpenters, mechanics, do-it-yourselfers, boat owners and hobbyists. Set includes a durable storage case.