Features: Good quality metal construction, high strength, anti-rust and durable for daily use. Quick and easy to disassembly and assembly all kinds of screws, hooks, lag screws, and bolt heads etc. Self-adjusts to fit thousands of fasteners. Compact size with ultra light weight, easy to carry. Easy to use, supports manual operation with handle or working with electric drill. Suitable for nuts or screws with diameter within 7-19mm. Specification: Material: Metal Color: As picture shown Suitable for nut between 1/4-3/4''(7-19mm) Size: Approx. 2.5 x 9cm / 0.98 x 3.54inch Weight: Approx. 167g Package Included: 1 x Universal Socket Sleeve 1 x Socket Sleeve Adapter Drill and other items in the picture are not included. 1、Good quality metal construction, high strength, anti-rust and durable for daily use 2、Quick and easy to disassembly and assembly all kinds of screws, hooks, lag screws, and bolt heads etc. Self-adjusts to fit thousands of fasteners 3、Compact size with ultra light weight, easy to carry 4、Easy to use, supports manual operation with handle or working with electric drill 5、Suitable for nuts or screws with diameter within 7-19mm