This Teng Tools 9 piece set consists of 3/8 inch drive Torx bit sockets for internal TX heads. The sockets are manufactured from chrome vanadium steel for strength and durability and have a satin chrome finish. They are supplied on a clip rail, which is ideal for both wall mounting and for use in a toolbox. The set comprises the following AF socket sizes:Tx10, Tx15, Tx20, Tx25, Tx27, Tx30, Tx40, Tx45 and Tx50. Material: Other Material.