Cold-forged Chrome Vanadium steel 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. Sizes: 10, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 24mm. Supplied with socket rail. Lifetime guarantee*. Model No. AK2696