Feature: 1. Improved Accessibility: Our 21mm hex wrench expander adapter enhances your work efficiency by providing better compatibility with 1/2-inch sockets or impact wrenches. It easily accesses tight spaces, making it perfect for any occasion and offering the highest level of efficiency. 2. Convenient Extension: The universal wrench extender adaptor extends the reach of your wrench, allowing you to effortlessly access narrow areas. With its improved leverage, the design also ensures easy removal of rusted nuts. 3. Enhanced Efficiency: Our wrench extension tool is made from metal, preventing drive slippage, increasing torque, and reducing wear. Its sturdy construction ensures durability, making it an excellent addition to your toolbox, especially for car repairs. 4. Improved Performance: This wrench extender is protected by a coating that prevents rusting. It is a universal tool extension, suitable for most wrench sizes. The non-fading coating ensures that the tool does not fade or peel over time. 5. Efficient Solution: Our torque multiplier tool makes working in hard-to-reach areas much easier. By using this convenient tool to extend your wrench, you can complete your work quickly and effortlessly, thereby increasing work efficiency and saving time and energy. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Material: metal colour: black Package Contents: 3 x Wrench Expander Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.