These stubby impact sockets are 20% shorter than shallow length sockets, making them perfect for working in tight spots Premium Chrome Molybdenum steel tempered with our proprietary heat treatment process to withstand more torque from power tools Expertly coated with manganese phosphate, the preferred coating in military and aerospace, which offers superior protection and corrosion resistance compared to black oxide coating on other impact sockets 6-point WaveDrive design grips fasteners more tightly than traditional design, preventing fastener rounding and giving you more leverage Single stubby length, 1/2 in. drive, 7/16 in. size impact socket