Package Content: The package contains 2 wing nut drivers. Total Length: 65.5 mm; Inner diameter of the socket 13 mm. Material: The wing nut driver bit tools is made of high quality CR-V steel, sturdy, durable, wear-resistant, withstanding high pressure. Easy to Use: Just pop it into a power screwdriver and get the wing nut/shutters installed without concern about spraining your thumbs by using other hardware tools, saves wears and tears on your fingers. Practical Design: Up to 5x faster than you can by hand, this wing nut driver designed to tighten or loosen wing nuts, bolts, hooks quickly and effectively when installing hurricane shutters/panels or doing other projects, and saves lots of your time and get your job done more faster. Wide Application: It is used for household DIY, auto parts, woodworking, gardening, professional machine maintenance, etc., saving effort and time. A must-have accessory for various household tool boxes. Note: 1. Please allow 1-3mm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. Weight: 45g Color: gray Size: 6.55cm long Package includes: 2pcs* electric drill head screw sleeve Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.