Self-locking design allows for quick change and release of screwdriver bits without cumbersome steps, offering convenient and fast operation. Designed for 1/4" hex shank bits, compatible with electric drills, screwdrivers, bit drivers, and other tools to extend and convert various screwdriver bits and bit heads. 60mm extension length provides improved maneuverability when working in tight or hard-to-reach areas. Product Name: Hexagonal Adapter Style: 60mm Hexagonal Shank Black Cap Quick Release (27g) Material: Alloy Size: 60mm Packing List: 1 x Hexagonal Adapter Note: - Due to extended shipping times, items may be damaged during transit. If damage occurs, please through the official platform before leaving feedback, and we will assist you promptly. - Size may vary by 1-3cm due to manual measurement. - Color may differ slightly due to monitor display variations.