TOPEC 32Pcs Bolt Extractor Set, Impact Bolt & Nut Remover Set-T8035Premium 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