Features 1. this wings nut driver is designed to tighten or loosen wings nuts, bolts and hooks quickly and efficiently when installing hurricane shutters or panels or working on other projects, saving you a lot of time and getting the job done faster. 2. Simply insert it into a power screwdriver to install wings nuts or blinds, no need to worry about twisting your thumb with other hardware tools, and it also prevents finger wear and tear. 3. this steel wings nut driver is the perfect tool to use with any power drill (1 or 4 inch hex shank). 4. This small wings nut driver is made of cr-v steel, which is very strong and durable. Specification Material: cr-v (Chrome Vanadium Steel cr-v (Chrome Vanadium Steel) Colour: Silver Overall length: 65 mm Counterbore length: 13mm Shank type: Hexagonal (Note: Due to manual measurement and slight colour difference caused by light and screen, please allow 1-3 mm error) Package Include 2PCS Wings Nut Driver