Reading Technologies Inc PERF-50 Paint Air System Package- PERF-50 System includes 3/4” Regulator w/ Gauge with (2) stage Prefilter with Auto drain 1st stage, ARAD-50 Regenerative Desiccant Dryer with Moisture Indicator, After Filter with 1/2” Regulator w/ Gauge For (2) gun spraying systems with up to 50 scfm delivered to your guns.