Features: Brand new and high quality The easy out bolt extractor set is made of high-carbon steel for durability and long life.It will easily extracted damaged bolts, nuts, and screws even if they are stripped, rusted. Our Lengthened version bolt extractor, which not only increases the height of the sleeve, but also has some improvement on the inner edges for a firmer grip, also can enter the narrow space that other bolt extractor cannot enter The sleeve reverse spirals grooves (the right-hand designed of the internal TORX thread) is designed to bites together to provide grip, and the more turn, the tighter the sleeve clamps. This is the most important conductive stabilizing tool for unscrewing screws, nuts and the most important thing. This damaged nut bolt remover with corrosion for protections is designed to remove damaged bolts, screws and nuts. Specifications: Material:Alloy 1: 1/4 Width:15.8mm(0.62in) Height:26.5mm(1.04in) 2: 5/16-8mm Width:15.8mm(0.62in) Height:26.5mm(1.04in) 3: 3/8-9.5mm Width:15.8mm(0.62in) Height:27mm(1.06in) 4: 10mm Width:15.8mm(0.62in) Height:27mm(1.06in) 5: 7/16-11mm Width:15.8mm(0.62in) Height:27mm(1.06in) 6: 12mm Width:15.8mm(0.62in) Height:27mm(1.06in) 7: 1/2 Width:18.8mm(0.74in) Height:26mm(1.02in) 8: 13mm Width:18.8mm(0.74in) Height:26mm(1.02in) 9: 9/16-14mm Width:22mm(0.86in) Height:26mm(1.02in) 10: 5/8-16mm Width:22mm(0.86in) Height:26mm(1.02in) 11: 17mm Width:24mm(0.94n) Height:26mm(1.02in) 12: 11/16-17.5mm Width:24mm(0.94n) Height:26.5mm(1.04in) 13: 3/4-19mm Width:27mm(1.06in) Height:26mm(1.02in) Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.