3-jaw chuck – a drill chuck with a universal key; the 3-jaw design securely holds tool holders. 3 adapters – includes three different adapters to convert tools into drill bits, supporting various connection requirements: - 1/4-inch hex adapter for screwdrivers - 1/2-inch square socket adapter for impact wrenches - SDS adapter for hammer drills/electric hammers Convenience – Keyless operation allows bit tightening without additional tools, eliminating the need to handle or locate a separate key. Durability – Features high-precision threading, a rust-resistant plastic body, and a tight taper design. Jaws and springs are made of high-quality steel alloy. All components are treated with anti-rust coating to extend service life. Wide compatibility – Compatible with gyro screwdrivers, cordless screwdrivers, impact screwdrivers, impact wrenches, hammer drills, and select angle grinders available on the market. Specifications: Name: Electric drill chuck Color: Black Material: Plastic + iron Size: 6 x 1.27 cm Package contents: 1 × automatic chuck 1 × electric conversion head 1 × hex post 1 × round shank post Note: Color may vary slightly due to lighting and display differences. Measurement tolerance: ±1–3 cm.