This deluxe in line lubricator protects tools against corrosion condensation and lack of lubrication. 1/4 MNPT x 1/4 FNPT lubricator has an oil capacity of 0.12 ounces and is ideal for job applications when you do not have access to a full FRL system. With a maximum pressure of 150 PSI this in line lubricator is used with tools requiring air flow up to 20 CFM.