This DeWalt 9 piece impact socket set is a tough, high quality professional set designed for use with 1/2" drive impact wrenches. Ideal for tightening bolts in steel framework and tightening hex drive nuts/bolts in fixings. All sockets are supplied in a sturdy re-useable storage container for convenient transportation. Features and Benefits: Impact rated sockets for use with 1/2" drive impact wrenches. Manufactured to the highest standards to ensure durability. Can be used for driving coach screws into wood. Black oxide finish with laser marking. Supplied in a heavy duty high-density polyethylene storage case. Includes 10, 13, 15, 17, 19, 22, 24, 27mm sockets and a 1/4" to 1/2" adaptor.