Heavy steel body. Material: carbon steel, tungsten steel claws. NOTE: The product can NOT be used counterclockwise! Quick and easy hand operation for quick bit change. Increased clamping force, with shaft quick change SDS for electric hammer. Applicable range: suitable for impact drills with a power of 1050 W. Keyless chuck for mains operation, cordless drills and drill drivers. It has a locking function, just tighten the rotating adapter to prevent hammering and other strong vibrations when the workpiece is released. Comfortable jacket surface with strong grip, easy to grip, making the output torque greater. The unique thrust through the bearing makes the torque applied to the handle easy to convert into a greater gripping force. Applicable range: suitable for a power of 1050 W over Impact drill. Material: HSS Tail length: 46 mm Head diameter: 43 mm Clamping range: 2-13 mm Holder: 1/ 2- 20UNF Size: 122 x 42 mm Component: 1 x SDS chuck adapter