Dimensions: Total length: 6.5cm / 2.6in, sleeve outer diameter: 1.7cm / 0.7in, drill bit: 0.4cm / 1.55in Material: The wing nut screwdriver is made of high quality steel, which is strong and durable, rust-resistant and strong and hard enough. Function: Just use an electric drill to turn the wing nut. It can drive all wing nut bolts, hook screws and improve efficiency. Compatibility: The 1/4 inch hex handle is compatible with any electric drill, allowing saving time and effort. Application: A good helper for installing hurricane shades/panel Christmas lights, string lights, etc. Can quickly disassemble and assemble wing nuts and hooks. Quantity: 3 pcs open end wing nut socket wrench Material: Steel Size: 65x17mm/piece Weight: 124g Note: For manual measurement, please allow 0-2mm error.