IBeaty Damaged Screw Remover and Extractor Set - Set of 4 Stripped Screw Removers General Precision Screwdriver Set HSS (High-Speed Steel) The 4 piece screw extractor set works with any drill and any screw size or bolt Made of durable hardened steel Works on wood and machine screws as well as philips, flat, hex, or painted over screws Very easy to use, just two steps: drill the damaged screw with the drill side, then remove it with extracted side. Great for stripped, broken, stuck or damaged and screw removal.