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 up to 10. Deep knurling on shafts allow extra grip when spinning off fixings. Spring-ball socket retainers. One of a comprehensive range of Premier Hand Tools, suitable for daily professional use. 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 up to 10. Deep knurling on shafts allow extra grip when spinning off fixings. Spring-ball socket retainers. Sizes: 75, 150, 200mm. Lifetime guarantee*.