Features Comfortable Grip Design: Engineered with a user-friendly cover for easy clamping, enhancing output torque for efficient drilling tasks One-Handed Operation: This small hole drill chuck supports effortless one-handed locking, providing shock resistance for improved control during use Innovative Concave-Convex Structure: The unique design minimizes outer sleeve shaking, ensuring quick usage and a secure grip for precise drilling Versatile Clamping Range: Accommodates drill bits from 2-13mm (1/16-1/2in) with a connecting thread size of 3/8-24UNF, perfect for various applications Durable Steel Construction: Made from easy-cutting steel, this threaded drill chuck is compatible with impact drills and both AC and DC electric drills of varying power Features: 1、Comfortable cover , easy to clamp, so that the output torsion becomes larger 2、Small hole drill chuck support one-handed , easy to lock, shock resistance 3、Beautiful and practical 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 2-1m (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: 2-1m (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 Package List 1 x Drill Chuck