IR ARO 2000 5-Micron Piggyback Filter/Regulator - All Tire Supply
5 Micron Compressed Air Filter / Dryer 1/2″ NPT 80 CFM Rating WNA 110FR – Walmec North America
RIH Air Dryer System - 1/2" NPT Double Air Filters-5 Micron Particulate Filter& Air Pressure Regulator - Gauge(0-150 psi), Semi-Auto Drain, Poly Bowl,Bracket - 3 in 1 Two Unit (1/2" NPT): Amazon.com: