IRWIN 1877498 Impact Performance Series Deep Well Square Drive Socket Reducer 12Inch Square to 38Inch Square

Built for maximum durability and long life with impact drivers, Made from heavy-duty chrome molybdenum steel for maximum durability and long life with impact drivers, Black oxide finish resists corrosion and increases life, Connects 1/2" square drive drills or accessories to 3/8" square drive sockets or accessories, Manufactured with heavy-duty, cold-forged, high-grade steel to withstand high torque output