Expert Quality, 6 point sockets manufactured from chrome vanadium steel, hardened and tempered with a micro satin finish. Each socket has a knurled ring for extra grip. Supplied on a metal socket rail for secure storage. Display packed. Contents: 11 x Sockets: 5/32, 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 7/16, 1/2, 9/16" Manufactured and tested generally in accordance with DIN3122 and ISO3315 Specifications