Feature: 1. 13-piece nut extractor is used to extract damaged bolts, nuts, screws, etc. It is easy to handle. 2. Multiple Size：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. 3. Made of high strength chrome vanadium steel, it is strong and has nice durability, wear and impact resistant. 4. This extractor tool can be driven with metric wrenches or sockets for quick work. 5. It comes with a storage box for neat storage and easy access, not easily lost. Specification: Features: 13-piece nut extractor is used to extract damaged bolts, nuts, screws, etc. It is easy to handle. Multiple Size：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. Made of high strength chrome vanadium steel, it is strong and has nice durability, wear and impact resistant. This extractor tool can be driven with metric wrenches or sockets for quick work. It comes with a storage box for neat storage and easy access, not easily lost. Specifications: Color: Black Material: Chrome Vanadium Steel Size: 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 Storage Box Size: 165 * 95 * 40mm/ 6.5 * 3.7 * 1.6in Package Size: 200 * 120 * 60mm/ 7.9 * 4.7 * 2.4in Package Weight: 726g/ 25.6oz Packing List: 1 * Bolt Remover Tool Set Package List: 1 * Bolt Remover Tool Set