Expert Quality, 6 point sockets manufactured from chrome vanadium steel hardened and tempered with coloured finish. Each size socket has a unique colour helping identify the socket and a knurled ring for extra grip. Packed on a plastic hanging rail that can also be used to store the sockets in a tool box. Contents: 10 x Sockets: 4, 5, 6, 7, 8, 9, 10, 11, 12, 13mm Manufactured and tested generally in accordance with DIN3122 and ISO3315 Specifications