[1.27cm Drive or 21mm Hex Wrench] Our wrench extender is compatible with 1.27cm drive or 21mm Hex screwdriver. This wrench extender adapter is perfect for . When working with heavy equipment as a technician, you may need to have these devices. [Tightening and Loosening ] Designed to extend the wrench with another wrench, creating more . Used with different wrenches to loosen or tighten stubborn nuts and bolts, making removal easier and saving effort. To tighten or loosen, you simply place it on the other side of the wrench. [Durable Steel Construction] -duty construction of this universal wrench extender adapter prevents from sliding around or around. Heat-treated steel construction makes the wrench extension strong and durable. Drop Body Wrench Adapter. [Anti-Rust Material] Heat-treated steel with to prevent rust. This universal wrench extender is suitable for nuts and bolts. Resists daily corrosion and discoloration. Durable. [Great Wrench Extension Tool] The universal wrench extender adapter saves you time and energy. Great for adding more on stubborn nuts and bolts, and into hard-to-reach areas. Type Name:Wrench Extender Adaptor Colour:Black Material:carbon steel Package Contents: 2 x Wrench Extender Adaptor 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.