This is a high quality unit that gives you the power to keep moisture out of your air lines, regulate air pressure, and lubricate your air lines all at once! This has 1/4" female NPT input as well as a 1/4" female NPT output port. You can adjust the regulated pressure between 7 - 150 PSI. 1/4" NPT Mid Flow 2 Stages Filter Regulator Lubricator Oiler Combo Piggyback (MANUAL DRAIN) This assembly has a 68 CFM max flow rate and comes equipped with a pressure gauge.5" Long x 3.