Yaetek Oxygen Regulator Harris Type Large Tank Gauge Cutting Torch Regulator Outlet 0-200PSI Inlet 0-4000PSI CGA 540 Go to amazon.com Related posts Top 6 best oxygen regulator torch for 2022 FeatureRegulator Is Made Of Solid BrassOXYGEN: 2-5/8'' diameter gauges.inlet- 0-4000 PSI.Outlet pressure-0-200 PSI.Inlet thread -CGA 540 female DescriptionRegulator Is Made Of Solid Brass OXYGEN: 2-5/8'' diameter gauges. inlet- 0-4000 PSI. Outlet pressure-0-200 PSI. Inlet thread -CGA 540 female