AES Industries 1/4" NPT Adjustable Air Regulator with 180 PSI Gauge for Pneumatic Spray Guns and Tools Allows you to have precise air control at the gun or tool for the best and consistent results Reads up to 180 PSI and 12 bar This regulator has a 1/4" NPT (M) Inlet and a 1/4" NPT (F) swivel Outlet. 1/4" NPT inlet and outlet, Fits all major brand spray guns and air tools