Irwin record t6vs 6 inch 150mm vice swivel base irwin t6vs p the irwin record vice is rigid and robust the body and sliding jaw are cast from close grained grey iron which is cnc manufactured on all friction surfaces for a smooth reliable action p p the jaws handle and main screw are steel the latter having a two start rolled acme thread to speed the jaws from fully closed to fully open with a minimum of winding p irwin record t6vs 6in 150mm vice swivel base