Cold-forged Chrome Vanadium steel 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. Set supplied on socket rail and backed by lifetime warranty. Sizes: 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19mm.