Features Plastic Drill Chunk is 100% brand new and high quality. Drill Chuck provides a drill chuck adaptor to connect the drill chuck and impact wrench firmly. High precision threads ensure tight and stable connecting. Fine and strict workmanship ensures its long service life. Keyless Drill Chuck is mainly used for impact wrench conversion. 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"-20UNFChuck Adaptor Thread: 1/2"Clamping Range: 2-13mmSize: Shown as picturesPackage Weight: Approx. 260g/9.2oz Package list:1 * Drill Chuck1 * Chuck Adaptor Note: Please allow slight error due to manual measurement. Thanks for your understanding. Package List