The Coilhose 8884AAG is a heavy-duty filter-regulator-lubricator (FRL) combination unit designed for robust pneumatic applications. This 1/2" port unit features a 40-micron filter to remove impurities, a regulator to maintain a consistent pressure range of 0-125 psi, and a lubricator to provide essential lubrication to your air tools. It comes equipped with a gauge for easy pressure monitoring and a manual drain for simple maintenance. The durable polycarbonate bowl ensures long-lasting performance in demanding work environments.