1、[HSS Material] Made from impact resistant 4241 high speed steel, these screw extractors provide excellent durability and corrosion resistance for long term use. 2、[Superior Grip] The damaged screw extractor is designed with thicker wall to provide the strength required. Its reverse spiral slot is meant to bite and offer maximum grip, perfect for removing larger nuts or bolts. 3、[Versatile Use] The hex drive end of the bolt extractor is compatible with flat wrenches, pliers, adjustable wrenches, sockets, or locking pliers, offering flexibility in use. 4、[Easy Identification] Each screw remover is engraved with its size in inch, allowing for easy identification and quick selection of the right tool for the job. 5、[Convenient Storage] The screw remover set is packed in a plastic case, making it easy to store and carry anywhere, whether in the garage or at home.