32Pcs Bolt Extractor Set, Extended Version Impact Bolt & Nut Remover Set with Hex Adapter, Stripped Bolt Remover Tool Kit for Removing Damaged, Frozen, Rusted, Rounded-Off Bolts, Nuts & ScrewsPremium Material: The easy out bolt extractor set is made of high carbon steel (chrome molybdenum steel) for durability and long life. It will easily extract damaged bolts, nuts, and screws even if they are stripped, rusted, or frozen. Suitable for Narrow Space: Our Lengthened version bolt extractors, which not only increases the height of the sleeve, but also has some improvements on the inner edge for a firmer grip, also can enter the narrow space