Expert Quality, socket bits, E sockets and Draper TX - STAR® ; key set. The sockets bits are manufactured from chrome vanadium steel and the bits are manufactured from S2 steel, all are correctly hardened and tempered with a satin chrome plated finish. The Draper TX - STAR® ; keys are manufactured from S2 Steel which is also correctly hardened and tempered with a satin chrome finish to prevent rust. Supplied complete in a two tone 1/2 drawer EVA insert tray made from closed cell foam. Suitable to be used in Draper and Draper Expert tool chests and other manufacturers similar tool chests. Contents: 5 x 1/4" Sq. Dr. E sockets E4, E5, E6, E7, E8, 5 x 1/2" Sq. Dr. E sockets E16, E18, E20, E22, E24, 7 x 3/8" Sq. Dr. E sockets bits E10, E15, E20, E25, E27, E30, E40, 7 x 3/8" Sq. Dr. Draper TX - STAR® ; sockets bits T10, T15, T20, T25, T27, T30, T40, 5 x 1/2" Sq. Dr. Draper TX - STAR® ; sockets Bits T45, T50, T55, T60, T70, 9 x Draper TX - STAR® ; Keys T10, T15, T20, T25, T27, T30, T40, T45, T50