SOCKET SIZE - Heavy duty 1-inch drive x 15/16-inch impact grade Budd style wheel socket for heavy duty vehicle useDURABLE STEEL - Socket is made from thick and durable chromoly (CrMo) steel for long lasting durabilityCORROSION RESISTANT - Features a rust and corrosion resistant black phosphate protective coating4-POINT DESIGN - 4-Point, square socket design grips the sides of fasteners, not corners reducing roundingLASER ETCHED - Socket has laser etched size markings that are easy to read and won't fade or rub awayRETAINING PIN COMPATIBLE - Through hole and groove on base allow use of retaining pins and ringsEXCEEDS REQUIREMENTS - Rated to withstand up to 150% of ASME torque requirements for impact grade sockets