Features Tightly Fixing: Chuck can fix the drill tightly, and it is not easy to loosen. It meets our use needs and is produced strictly in accordance with the standards. High -precision Line: Drill chuck has a high -precision line to ensure that the connection is close and stable, and the surface is flat, which can satisfy our use well. Used For Impact Wrench Conversion: 2-13mm+1/2 thread joints are mainly used for impact wrench conversion. It can directly replace the damaged or problematic joints, which is very convenient. Stable Performance: 1/2--20UNF plastic clip head has stable performance, high reliability, lightweight and delicate shape, which can satisfy our use well. Connection: Provide a adapter with a drill bit, to connect the drill bit and hit the wrench firmly. It is a very practical tool accessory. Features: 1. New  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: 2-13mm 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