The BlueSpot 10 PCE 1/2" Metric Deep Impact Sockets (10-24mm) are manufactured from heat-treated, tempered chrome vanadium for strength and durability. Ideal for use with impact guns and high torque air tools. Deep impact socket for increased range and precision. Contains socket sizes: 10, 11, 13, 14, 17, 18, 19, 21, 22, 24mm. Complete with a handy carrying case for quick and easy storage.