5 Piece Knurled Wobble Extension Bar Set3/8" Sq DriveSocket RetainerForged 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 allows extra grip when spinning off fixings. Spring-ball socket retainers. Supplied in storage trayFeatures: 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 allows extra grip when spinning off fixings. Spring-ball socket retainers. Sizes: 38, 75, 150, 250, 450mm. Supplied in storage tray. Lifetime guarantee*. Specification: Drive -3/8"Sq Length -38, 75, 150, 250, 450mm Material -Chrome Vanadium Net Weight -0.88kg Further Information We sell a wide variety of tools and workshop equipment for both the DIY and Professional markets. Alias: ys01821