Every mechanic knows that having a reliable set of tools can make your life easier when working on truck wheels in the workshop. The STEELMAN 99438 10-Piece 1/2-Inch Drive Thin Wall Deep Impact Socket Set contains a wide variety of heavy-duty sockets used to work on and service the wheels on large trucks and tractor trailers. Set includes the following metric socket sizes: 14mm, 17mm, 19mm, 21mm, 22mm, 13/16-inch, 7/8-inch, 15/16-inch, 1-inch, 1-1/16-inch. Made from drop forged and heat treated chromoly steel, these sockets feature a ball detent recess on the 1/2-inch drive end to help them hold securely onto ratchets, air wrenches, adapters, and extensions. The 6-point design grips the sides of fasteners and not the corners, reducing wear and the chance of rounding the fastener and the thin walled design allows them to reach fasteners in recessed areas too narrow for regular sockets. The sockets each feature a rust and corrosion resistant black oxide protective coating with laser etched size callouts and markings. Rated to withstand up to 150% of ASME torque requirements for impact tools, these can handle tough use in any professional shop / garage or home workshop. When not in use the sockets can be stored in the included, wall mountable metal storage box (mounting hardware is included).