2-13Mm Capacity Mount 1/2-20Unf Keyless Drill Chuck Quick Change Conversion Bestgle 2-13mm Capacity 1/2-20UNF Mount Keyless Drill Chuck with 1/2" Square Female Socket Adapter This quick change universal chuck constructed with carbon steel and pc plastic, sturdy, and durable for long life. Excellent chuck replacement or upgrade compatible with thousands of model corded and cordless drills. Classic 3-jaw design, it can securely holds a wide range of twist drills and step drill bits with 2 to 13mm round-shank. No chuck key needed, simply hold and turn to tighten or loosen chuck, also allows easily locks and releases drill bits. This keyless drill chuck comes with universal driver 1/2-inch socket square female adapter for air impact wrench. Specifications: Material: Carbon Steel PC Plastic Thread Mount: 1/2-20UNF Clamping range: 2-13mm Please Note: ? The drill chuck can NOT be used counterclockwise! ? This item is NOT suitable for impact drivers or applications involving high torque load!! ? Please allow 1-3cm error due to manual measurement. Please make sure you do not mind before you bid. Package Included: 1 Drill Chuck 1 1/2" Square Female Socket Adapter Mount: 1/2-20UNF, Capacity range: 2-13mm, easy to snap into the power tool Come with 1/2" Square Female Socket Adapter, easy to transform power impact wrench to a drill Keyless Chuck Design, tool-free accessory allows you to quickly and easily lock and release by hands Class 3-Jaw Design Allows you to effortlessly hold round-shank drill bits from 2mm to 13mm securely Please Note!! It can NOT be used counterclockwise and NOT suitable for impact drivers or applications involving high torque load