This 7-piece Draper Expert quality TX-STAR socket set features sockets manufactured from chrome vanadium steel, hardened and tempered with a polished finish. Each socket has a hole in the drive end for ball retention and is packed on a socket retaining bar with hanging holes at each end. The set includes 3 x 1/4"" sq. dr. sockets (E6, E7, E8) and 4 x 3/8"" sq. dr. sockets (E10, E12, E14, E16).