Cold-forged Chrome Vanadium steel 12-point sockets, hardened and tempered for added strength. Fully polished chrome finish for corrosion resistance. WallDrive® configuration giving an additional 30% more torque handling power than traditional sockets. Knurled ring for extra grip with oily fingers. Supplied with socket rail. One of a comprehensive range of Premier Hand Tools, suitable for daily professional use. Cold-forged Chrome Vanadium steel 12-point sockets, hardened and tempered for added strength. Fully polished chrome finish for corrosion resistance and knurled ring for extra grip with oily fingers. All sockets include WallDrive® configuration giving an additional 30% more torque handling power than traditional sockets. Sizes: 12-point; 3/8"", 7/16"", 1/2"", 9/16"", 5/8"", 11/16"", 3/4"", 13/16"", 7/8"", 15/16"", 1"", 1-1/16"", 1-1/8"". Supplied on socket rail. Lifetime guarantee*.