Features 【Premium Material】100% brand new and high quality. Drill chuck is made of high quality, high hardness, durable in use. 【Useful Tool】Provides a drill chuck adaptor to connect the drill chuck and impact wrench firmly. Tool-free accessory allows you to quickly and easily lock and release. 【High Practicality】High precision threads ensure tight and stable connecting. Torque thrust bearing unique easy-grip exerted translate into greater clamping force. 【Durable In Use】Fine and strict workmanship ensures its long service life, mainly used for impact wrench conversion. Clean up the mechanical waste and foreign matter left in the drill chuck in time after using it. 【Please Note】This drill adaptor can NOT be used counterclockwise and NOT suitable for impact drivers or applications involving high torque load. Features: 1. 100% brand new and high quality. 2. Provides a drill chuck adaptor to connect the drill chuck and impact wrench firmly.   3. High precision threads ensure tight and stable connecting. 4. Fine and strict workmanship ensures its long service life. 5. Mainly used for impact wrench conversion.   Specification: Thread Mount: 1/2"-20UNF Chuck Adaptor Thread: 1/2" Clamping Range: 2-1m Size: Shown as pictures Package Weight: Approx. 260g/9.2oz   Package list: 1 * Drill Chuck 1 * Chuck Adaptor   Note:  Please allow slight error due to manual measurement. Thanks for your understanding. Package List