Heavy Steel Body. Material: carbon steel, tungsten steel claws. NOTE: The product CANNOT be used counterclockwise! Quick and easy to use by hand for quick bit changes. Increased clamping force, with quick-change SDS shank for electric hammer. Applicable scope: suitable for power of 1050w above impact drill. Keyless chuck for use on mains, cordless drills and drill drivers. Color:Sds Chuck Metal It has locking function, only to tighten the rotation adapter prevent hammering and other strong vibration when work is released. Comfortable jacket surface, with strong grip, easy to grip, making the output torque larger. The unique thrust bearing, the torque applied to the handle is easy to translate into greater grip strength. Applicable scope: suitable for power of 1050w above impact drill. Specifications: Material: HSS Shank Length: 46mm Head Diameter: 43mm Clamping Range: 2-13mm Mount: 1/2-20UNF Size: 122 x 42mm Package: 1 x SDS Chuck Adapter