The D-41517 9 Piece Impact Socket Set is suitable for ½” square drive impact wrenches and nuts, studs, wheels, automotive and more, supplied in a tough and durable injection moulded case. Makita Impact Sockets are manufactured from high strength chrome molybdenum alloy steel for increased impact resistance and long service life, high quality and long lasting, suitable for professional use. The sockets have an o-ring and pin fixing for securing to the drive.