General description The Universal Self-Tightening Chuck is a professional heavy-duty chuck designed for versatility and efficiency. It features a quick-lock mechanism that allows for easy locking and unlocking of drill bits without the need for a key. This chuck is ideal for converting electric screwdrivers into drills or grinders, making it a valuable tool for various applications including routine maintenance, auto repair, and home improvement. Technical specifications Material: Chrome vanadium steel Hole diameter: 12 mm Clamping range: 2-13 mm Mounting thread: 1/2-20UNF Scope of application: Suitable for impact drills with a power of 1050 W or more Compatibility and accessories Compatible with impact drills, hammer drills, electric drills, gear chucks, and most cordless drills and screwdrivers Package includes: 1 x Drill chuck, 1 x SDS adapter Installation Simply click the chuck into the impact drill for easy installation Usage Quickly change drill and screwdriver bits using the