Sealey Wobble/Rigid Extension Bar Set 3piece Square Drive Black Series Range - Sealey AK7691, Heat treated and hardened Chrome Vanadium steel shafts. Fully polished black chrome finish with machined and lacquered heads. Cut-away tips allow sockets to be driven with shaft offset of up to 10°. Deep knurling on shafts allows extra grip when spinning off fixings. Spring-ball socket retainers. Sealey AK7691 Wobble/Rigid Extension Bar Set 3pc 3/8"Sq Drive Black Series