Chrome Vanadium steel Total Drive® sockets, hardened and heat treated for strength. Half chrome/satin finish with knurled ring for corrosion resistance and extra grip - even with oily fingers. All sockets are equivalent to Metric hex and bi-hex sockets with many being also equivalent to Imperial hex, Imperial bi-hex and TRX-Star* sockets. Supplied on rail. Features & Benefits:Hardened and tempered Chrome Vanadium steel Total Drive® sockets with chrome/satin finish and knurled finger grip ring.Supplied on storage rail.Sizes: 4, 4.5, 5, 5.5, 6, 7, 8, 9, 10, 11, 12, 13, 14mm.Lifetime guarantee*.Model No. AK69813D Specifications: Model No AK69813D Brand: Premier Configuration: Total Drive® Contents: 4, 4.5, 5, 5.5, 6, 7, 8, 9, 10, 11, 12, 13, 14mm, Socket Rail Depth: Deep Nett Weight: 0.45kg Qty: 13 Type: 1/4"Sq Drive