Forged Chrome Vanadium steel shafts, heat treated and chrome plated with mirror finish. Cut-away tips allow sockets to be driven with shaft offset of 10°. Deep knurling on shafts allow extra grip when spinning off fixings. Spring-ball socket retainers. Supplied in storage tray. Features & Benefits:Forged Chrome Vanadium steel shafts, heat treated and chrome plated with mirror finish.Cut-away tips allow sockets to be driven with shaft offset of 10°.Deep knurling on shafts allow extra grip when spinning off fixings.Spring-ball socket retainers.Sizes: 38, 75, 150, 250, 450mm.Supplied in storage tray.Lifetime guarantee*.Model No. AK767 Specifications: Model No AK767 Brand: Premier Drive: 3/8"Sq Length: 38, 75, 150, 250, 450mm Material: Chrome Vanadium Nett Weight: 0.88kg