EDGE™ Series 2.0 Regulator, ESS32, Oxygen (O2), 0 to 60 psig, 3000 psig Inlet, CGA 540 no checkout with improved abrasion resistance Excellent comfort with improved abrasion resistance Excellent comfort 9 oz cotton jacket provides workplace safety with its flame retardancy and highly visible Safety Orange color Hemmed collar increases durability despite repeated washes Specially designed under arm sport cut for increased mobility Dielectric 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 Fully enclosed