Usage Tips:Heavy Duty Hand Tools Ratchet Wrench Adapter Perfect for many jobs and great gift for all tool lovers match drive sizes for the sockets, ratchet handles, extension bars Perfect for Mechanics, engineers, carpenters or DIY enthusiasts Hand Tools Drive Reducing Adaptors Kit : Woodworking Model Number: Drive Socket Adapter Converter Quick Release Impact, Hex Shank Adapter Convert any air or power impact wrench into a drill or ratcheting wrench into a driver with this single piece chuck converter. Quick Release Converter for Impact Wrench. 1/2-Inch Drive to 1/4-Inch Hex that converts air or power impact wrench into a drill size: Length: 50mm Back end diameter: 12.5nn Front diameter: 6.35mm colour:black Material:steel Package Contents: 2 * Hex Female Socket Adapters 2 * O-rings 2 * pins 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.