Screw Extractor and Damaged Screw Remover - Set of 4 Stripped Screw Extractor & Bolt Extractor Removes any stripped screw in 10 seconds or less. The 4 piece screw extractor set works with any drill and any screw size or bolt Made of durable S2 hardened steel(65HRC),Works on wood and machine screws as well as philips, flat, hex, or painted over screws Great for stripped, broken, stuck or damaged and screw removal.