General description Premier Black Wobble/Rigid Extension Bar Set includes 9 pieces designed for professional use. The set features heat-treated and hardened Chrome Vanadium steel shafts with a fully polished black chrome finish and machined lacquered heads. The wobble feature allows sockets to be driven with a shaft offset of up to 10 degrees, enhancing versatility in tight spaces. Deep knurling on the shafts provides extra grip, ensuring ease of use. Technical specifications Drive sizes: 1/4in, 3/8in, 1/2in Lengths: 1/4"" Sq Drive - 75mm, 100mm, 150mm; 3/8"" Sq Drive - 75mm, 150mm, 250mm; 1/2"" Sq Drive - 75mm, 125mm, 250mm Other information Supplied in EVA foam storage tray Lifetime guarantee*