Master Mechanic 1/2" drive Deep Impact Sockets are manufactured from high strength chrome molybdenum steel. The 6-point design helps reduce risk of slippage and rounding off your fasteners. Corrosion resistant black phosphate finish. Socket Size: 35 mm Drive Size: 1/2" Points: 6-point Deep impact socket High strength chrome molybdenum steel construction Corrosion resistant black phosphate finish.