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 are made of high-quality CR-V steel, sturdy, durable, wear-resistant, and capable of withstanding high pressure. Easy to Use: Simply insert into a power screwdriver to install wing nuts or shutters without straining your thumbs, reducing strain on your fingers compared to using other hardware tools. Practical Design: Up to 5 times faster than manual installation, this wing nut driver is designed to quickly and effectively tighten or loosen wing nuts, bolts, and hooks during hurricane shutter or panel installation and other projects, saving time and improving efficiency. Wide Application: Suitable for household DIY, auto parts, woodworking, gardening, and professional machine maintenance. A must-have accessory for various household toolboxes. Note: 1. Please allow 1-3 mm error due to manual measurement. Thank you for your understanding. 2. Monitors are not calibrated the same; the item color displayed in photos may vary slightly from the actual object. Please refer to the physical product as the standard. Weight: 45 g Color: Gray Size: 6.55 cm long Package Includes: 2 pcs electric drill head screw sleeves