This damaged nut bolt remover with for protections is designed to remove damaged bolts, screws and The sleeve reverse spirals grooves (the right-hand designed of the internal thread) is designed to bites together to provide grip, and the more turn, the tighter the sleeve clamps The easy out bolt extractor set is high-carbon steel for durability and long life.It will easily extracted damaged bolts,, and screws even they are stripped, rusted Our Lengthened version bolt extractor, which not only increases the height of the sleeve, but also has improvement on the inner edges for a firmer grip, also can enter the narrow space that other bolt extractor cannot enter This is the most important conductive stabilizing tool for unscrewing screws, and the most important thing, Manufacturer: Msioytog