The Kennedy 3/8in. drive size A/F (across flats) impact sockets are manufactured from high quality chrome molybdenum steel for durability and strength. Specifically designed for use with impact wrenches or drivers, these robust Kennedy sockets easily withstand the high torque generated in industrial-level applications. Features and Benefits Black oxidised finish is corrosion-resistant and won't chip or break under pressure Highly compatible with various tools for operator convenience High torque capacity allows them to handle the transfer of torque without taking damage Permanent laser etched size markings for easy identification Typical Applications Automotive Construction Machinery maintenance Industrial applications DIY enthusiasts Agricultural machinery Equipment repair Standards SAE USA Federal Standard GGG-W-660A