Forged Chrome Vanadium steel shafts, heat treated & chrome plated with mirror finish. Cut-away tips allow sockets to be driven when shaft offset is up to 10? from its axis. Deep knurling on shafts allows extra grip for oily fingers when spinning off sockets. Sprung ball socket retainers. Sizes 50, 125, 250, 375, 500mm. Supplied in tool tray.