Victor EDGE Series 2.0 Regulators Fully enclosed, highly visible modular gauges for more clarity with robust metal gauge guard. Choose from large 2-inch delivery gauge (ESS32) or extra-large 2-1/2 inch delivery gauge (ESS42). Robust seat gives optimum performance. Consistent pressure and flow delivery. High resistance to oxygen related fires and SLAM knob absorbs impact in the event of cylinder fall Pack of 1