The Coilhose 29-4T12-00 is a compact and efficient filter-regulator-lubricator (FRL) combination unit. This unit features a 40-micron filter for removing contaminants, a regulator with a pressure range of 5-120 psi, and a lubricator. It includes a square gauge for easy monitoring, a manual drain, and a durable bowl. With a 1/2" port size and a maximum pressure of 145 psi, it's designed to provide clean, regulated, and lubricated air for your pneumatic equipment.