[Exquisite Material]The impact grade socket adapter extension set is made of high-quality chrome vanadium steel, which is sturdy, -resistant, and for long time use, perfect for increased torque projects, helping to prevent the breaking and stripping. [Easy to Use]The extension bit holder is designed to provide a securely locked in extension to your existing tool. The impact driver socket can provides additional length to reach into a multitude of hard to reach space, which is very easy to use. [Powerful Functions]The double tooth hex shank specifically machined to fit securely into a drill driver or impact wrench. The spring ball lock ensures a tight fit into the driver to prevent slipping during use. [Wide Applications]The impact driver socket adapters are compatible with all of power drills, suitable for automotive mechanic vehicle repairs, technicians, and hobbyist developments to use with sockets on hardware tire nuts, lag bolts, hex cap screws. Colour: black + silver Material: steel Package Contents: 2 * (1/4inch hex shank to 1/4inch socket) universal socket adapter 2 * (1/4inch hex shank to 3/8inch socket) universal socket adapter 2 * (1/4inch hex shank to 1/2inch socket) universal socket adapter Only the above package content, other products are not included. Note: Light 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.