Every mechanic knows that having a reliable set of tools can make your life easier when working on heavy-duty vehicles and equipment. The Steelman PRO 79323 1 in. Drive Budd Wheel 38 mm Hex x 20 mm Square Combo Impact Socket is specially designed to help speed up wheel servicing on large trucks, tractor trailers, buses, and other vehicles using Budd Wheels. The combination hex and recessed square socket performs double duty, fitting both lug nuts and studs, removing the necessity of changing sockets halfway through the job. Made from drop forged and heat treated chromoly steel, this socket features a ball detent recess on the 1 in. drive end to help hold it securely onto ratchets, air wrenches, adapters, and extensions. The socket features a rust and corrosion resistant black phosphate protective coating with laser etched size callouts and markings. Rated to withstand up to 150% of ASME torque requirements for impact tools, can handle tough use in any professional shop / garage, home workshop, or on the work site.