Shop name:Chong Qing Shuo Yue Ke Ji You Xian Gong Si High Quality Heavy Duty Hand Ratchet Wrench Adapter Perfect for many jobs and great gift for all tool lovers match drive sizes for the sockets, ratchet handles, extension Perfect for Mechanics, engineers, or DIY enthusiasts Hand Drive Reducing Adaptors Kit DIY Supplies: Woodworking Number: Drive Socket Adapter Converter Quick Release Impact, Hex Adapter Convert any or 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 converts or 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 the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.