14pcs Impact Damaged Bolt Nut Remover Extractor Socket Tool Set with Socket Nut Adapter Bolt Nut Screw Removal Socket Wrench. Features: 1. Fits for most tools--with a 3/8” square drive for use with hand ratchets, impact wrenches; air ratchets; hexagonal flats for use with flat wrench, pliers, adjustable wrench, sockets. 2.  Made of 40Cr chrome vanadium steel which is tougher than tool steel, ensuring longer life and greater durability. 3. 1/4", 5/16"(8mm), 3/8", 10mm, 7/16"(11mm), 12mm, 1/2", 13mm, 9/16"(14mm), 5/8"(16mm), 17mm, 11/16", 3/4"(19mm). Can be used on SAE and Metric sizes. 4. Fits all types of fasteners. Description: Drive:3/8 Inch Square; Material:40Cr Chrome Vanadium Steel; SAE Size:1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16"; Metric Size:8mm, 10mm, 11mm, 12mm, 13mm, 14mm, 16mm, 17mm, 19mm; Socket Adapter:Shank(1/4 Inch Hex Shank), Head(3/8 Inch); Quantity:14Pcs; Model:Specification;Height; 1:1/4;29mm; 2: 5/16-8mm;29mm; 3:3/8-9.5mm;29mm; 4:10mm;29mm; 5:7/16-11mm;29mm; 6:12mm;29mm; 7:1/2-12.7mm;29mm; 8:13mm;29mm; 9:6/16-14mm;29mm; 10:5/8-16mm;29mm; 11:17mm;29mm; 12:11/16-17.5mm;29mm; 13:3/4-19mm;29mm; Package Included: 13 x Bolt Nut Extractor; 1 x 3/8 Inch Socket Nut Adapter; 1 x Box.