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. Supplied with socket rail. Features & Benefits: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: 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19mm.Supplied with socket rail.Lifetime guarantee*.Model No. AK2693 Specifications: Model No AK2693 Brand: Premier Configuration: 6-Point Socket Contents: 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19mm, Socket Rail Depth: Standard Nett Weight: 0.49kg Qty: 12 Type: 3/8"Sq Drive - Metric