Includes 2PCS 1/2 inch Square Drive to 1/4 inch Hex Female Socket Adapter Converter Chuck Adapter, ideal for use with impact wrenches, air tools, and electric wrenches. This practical accessory set adds versatility to your toolbox. This 1/2" Keyless Drill Chuck with 1/2-20UNF thread provides a clamping range of 1.5mm-13mm. The self-tighten drill chuck ensures bits stay firmly in place, preventing loosening and delivering stable performance even under heavy-duty tasks. Designed with carbide-tipped jaws, the drill chuck locks onto bits firmly while minimizing wear. Easy installation and long-lasting durability reliable operation, even when working with demanding drilling applications. Quickly loosen or tighten the chuck by hand without any key. The self-tighten ratchet mechanism offers audible feedback, making bit changes fast and effortless-perfect for woodworking, metal drilling, and daily repair projects. The 1/2-20UNF keyless drill chuck is compatible with like , , , , and . We value customer satisfaction and are committed to providing quick support to a smooth user experience., Manufacturer: Akfldms