Heavy duty, ½” square drive, deep impact sockets for fixing hexagon nuts and bolts etc, ideally suited for air or cordless impact driving tools but can also be used with hand held ratchet wrenches. Manufactured from chrome vanadium steel for increased durability Black phosphate, rust resistant finish Standard metric 6 point ½” drive Ideal for use with air tools Supplied on a Eurohook so they are easy to display Size: 18mm