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 hand fatigue compared to using manual tools. Practical Design: Up to 5 times faster than hand 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 applications, saving time and effort. Wide Application: Suitable for household DIY projects, auto parts, woodworking, gardening, and professional machine maintenance. A must-have accessory for various toolboxes. Note: 1. Please allow 13 mm error due to manual measurement. Thank you for your understanding. 2. Monitors are not calibrated the same; the item color in photos may differ slightly from the actual product. Please refer to the physical item. Weight: 45 g Color: Gray Size: 6.55 cm long Package Includes: 2 pcs electric drill head screw sleeves