Work on a wide range of axle nuts with the STEELMAN 79423 8-Piece 1/2-Inch Drive 12-Point Axle Nut Impact Socket Set. These heavy-duty sockets are designed and engineered to handle the extreme torque and stresses needed to remove stubborn, often rusty axle nuts. Constructed of chromoly (Cr-Mo) steel for lasting strength and durability, these impact grade sockets are designed for a lifetime of dependable use and each feature a black phosphate protective finish that resists rust and corrosion. A machined groove and through hole on each socket's 1/2-inch drive end allow the use of retaining and retention rings for added safety to prevent sockets accidentally coming off impact wrenches during heavy use. The socket's 12-point design allows them to work on a wide range of axle nut types including 12-point, 6-point, and 4-point / square. Call outs and size markings are laser etched into the steel and will not wear away or rub off from use. Set includes 29mm, 30mm, 32mm, 34mm, 35mm, 36mm, 38mm, and 39mm sockets. All 8 sockets come in a blow molded plastic storage case for easy storage and transport.