For removing broken screws, bolts, and threaded parts; Damaged Screw RemoverFor removing broken screws, bolts, and threaded parts;The extractor ... a wrench; Also for turning threaded pipe sections; Art No.Screw Extractor # For Removing Screws DiameterDrill Size to Use5070100113/32" to ... " and up, 1" pipe1-1/16" to 1-1/8"Screw Extractor Set Damaged ...