1/2'' Drive Hex Drill Chuck Converter Adapter Socket For Impact Wrench Description: Made of durable steel, high hardness and wear resistance. Easy to use, small in size, easy to carry. 3/8 Self-locking 10mm Drill Chucks Adapter Material:Steel Color:Black Clamping range: 0.8mm-10mm 1/2 self-locking 13mm Drill Chucks Adapter Material:Steel Color:Black Clamping range: 2.0mm-13mm Package Included: 1 x self-locking chuck 1 x leather ring 1 x shoot Multiply utility of cordless impact drivers and wrenches to do work of regular power drill. Chuck Size Thread: Thread Mount: 1/2"-20UNF, Chuck range: Approx. 2-13mm/5/64”-1/2”, Chuck Adaptor Thread: 1/2” Material: Carbon Steel and plastic. Unique patented locking function, conveniently tighten with one hand, breaking the traditional locking methods. NOTE: The product can NOT be used counterclockwise ! NOT suitable for impact drivers or applications involving high torque load. Keyless function, tool-free accessory allows you to quickly lock and release, converts a cordless power screwdriver into a drill or grinder in seconds