18977 3/4" CrMo Kraft socket, 27 mm, length: 90 mm, delivered in a box with Proline impact wrench. Proline works with pneumatic tools designed for use under tough conditions and varying loads. Made from durable chrome-molybdenum steel (CrMo) for a longer lifespan, with 2x higher tensile strength and 3x higher yield strength than conventional chrome-vanadium tool steel sockets. The PROLINE socket features specially profiled roundings with blunt angles between the working surfaces. The PRO-DRIVE system allows for increased torque to prevent excessive point loads from accumulating in the corners between the teeth of the socket and the screw, thus preventing the socket from breaking. The wall enhances the durability of the cover and protects the edges of the unscrewed screw. Square sockets are compatible with the most reliable pneumatic locking mechanisms. Socket wrench, length L: 90 mm.