The Performance W32160 1/2-inch Drive 5/8-inch Spark Plug Socket is chrome vanadium constructed for extra strength and durability. Features: * 1/2-inch drive spark plus socket size: 5/8-inch * External hex: 3/4-inch * 2-9/16 inches long * Chrome vanadium alloy steel construction for strength and durability * Nickel chrome plated to resist corrosion * Lifetime warranty What"s In The Box: * Performance W32160 1/2-inch Drive 5/8-inch Spark Plug Socket