3-jaw chuck - a drill chuck with a universal key 3-jaw design that can firmly secure tool holders 3 adapters - 3 different types of adapters allow easy conversion of your tool into a drill bit, suitable for various connection needs; 1/4 inch hex adapter for screwdrivers, 1/2 inch square socket adapter for impact wrenches, and one adapter for hammer drill/electric hammer Convenience - Compared with the keyed chuck, the keyless chuck can secure the bit without additional tools, eliminating the need to carry or find a small chuck key Durability - The chuck features high-precision threading, a hard rust-resistant plastic body, and a tight taper. Jaws and springs are constructed from high-quality steel alloy. All components have anti-rust surface treatment to extend service life Wide compatibility - This drill chuck adapter kit is compatible with gyro screwdrivers, cordless screwdrivers, impact screwdrivers, impact wrenches, hammer drills, and certain angle grinders from most major brands Specifications Name: Electric drill chuck Color: Black Material: Plastic + iron Size: 6 x 1.27 cm Package Contents: 1 x Automatic chuck 1 x Electric conversion head 1 x Hex post 1 x Round shank post Note: Light and display differences may cause slight variation in color between the image and actual item. Measurement may vary by +/- 1-3 cm.