Mounting: 1/2-20UNF; Capacity Range: 2-13mm / 1/16-1/2 inch; Designed for tough jobs. Made of metal for maximum durability. Scope of Application: Suitable for impact drills with power above 1050W. Quick-change SDS shank for electric hammer drills. Use on cordless drills and corded drill drivers. Tighten comfortably with one hand thanks to the unique single-sleeve design. The unique torque stop device is easy to handle and apply, ensuring superior tightening. Quick-change SDS shank for electric hammer drill, instantly converts the impact driver into a non-quick-change drill bit holder. Features: Exclusive thrust bearing, the torque applied to the handle easily translates into greater gripping force. Multiplies the usefulness of cordless impact wrenches and wrenches to do the work of a traditional drill. Suitable for impact drills with power equal to or above 1050W. Good metal texture, comfortable jacket surface, with strong grip, easy to hold, which increases output torque. Can convert