This DeWalt 26 Piece 1/2" Drive Deep Metric Impact Socket Set (DWMT19242) offers a wide variety of impact sockets for any user need. This O-ring and retaining pin compatible black oxide socket set is made from heat treated CR-440 steel and features high visibility laser etched markings. These sockets feature DeWalt DirectTorque technology that allows greater contact with the flat surface areas of fasteners creating greater torque and prevents rounding of fasteners. This technology is particularly useful on already worn and rounded fasteners.