EXELAIR by Milton’s Simply Better Air® system provides the best solution to manage compressed air. This (EX45R-04) 1/2" NPT Air Regulator maintains consistent pressure and prevents overdriving tools. The FRL Regulator features 1 5/8” dial gauge readings in PSI and MPa, and includes a lockout knob that allows set PSI pressure. Adjustment ranges 5-125 PSI. Max Air Flow of 212 CFM and max operating pressure of 145 PSI. Gauge thread: 1/4" center mount. Includes mounting bracket and hardware.