Rioa 5pcs Damaged Screw Extractor Bolt Screw Stud Remover Set Drill Hex Shank 1/4'' Rioa Screw Extractor Surface treatment:Nickel Plated.Material: HSS4241 Type: 0#, 1#, 2#, 3#, 4#.Handle: Hexagon handle Shank: Hex Shank.Made of High Speed Steel for longer life. The plastic reusable carrying/storage case is not included Designed to remove stubborn, rusted, stripped, screws or bolts, even factory?installed carriage type