5 Piece Knurled Wobble Extension Bar Set1/4" 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 retainersFeatures: 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: 50, 75, 100, 150, mm. Lifetime guarantee*. Specification: Drive -1/4"Sq Length -50, 75, 100, 150, 225mm Material -Chrome Vanadium Net Weight -0.27kg Further Information We sell a wide variety of tools and workshop equipment for both the DIY and Professional markets. Alias: ys01820