Features 1、Comfortable cover surface, easy to clamp, so that the output torsion becomes larger 2、Small hole drill chuck support one-handed operation, easy to lock, shock resistance 3、Beautiful and practical surface concave‑convex design, so that the front and rear sleeves can effectively cooperate and reduce the shaking of the outer sleeve, quick to use and not easy to slip 4、The clamping range is from 2-13mm (1/16-1/2in), and the connecting thread size is 3/8-24UNF 5、Adopt easy‑cutting steel material, suitable for impact drills, AC and DC electric drills of different power Specification Item Type: Drill Chuck Material: Easy-cutting steel Clamping Range: 2-13mm (1/16-1/2Inch) Connection Thread Size: 3/8-24UNF Scope of Application: Impact drills, AC and DC electric drills of different power Package List 1 x Drill Chuck