Features For removing screws: The set contains 10 pieces screw remover sockets, which can help remove nuts, bolts, screw heads, studs, etc. With spiral cutting teeth: These nut removers have spiral cutting teeth that provide a good grip when removing round or damaged screws. Durable Material: Made of chrome vanadium alloy steel, with high strength and wear resistance and not easy to deform. Use with Electric Screwdrivers: These screw remover sockets can be used for quick work with metric electric screwdrivers or sockets. With aluminum box: Equipped with an aluminum box, which can fix and store these nut removers well, easy to use at any time. Specification: Item Type: Nut Remover Set Material: Chrome vanadium alloy steel Purpose: screw remover Color: Black Base height: approx. 2.7 cm/1.1 inch Base size: approx. 9mm/0.35 inch 10mm/0.39 inch 11mm/0.43 inch 12mm/0.47 inch 13mm/0.51 inch 14mm/0.55 inch 15mm/0.59 inch 16mm/0.63 inch 17mm/0.67 inch 19mm/0.75 inch Package list: 10 x Nut Remover 1 x Aluminum Box Note: Please wear protective gear when removing the damaged nut to prevent dirt from splashing out and causing injury to yourself. Package List 10 x Nut Remover 1 x Aluminum Box