Air Compressor Regulator 0180 PSI Pressure Controller 1/4in with Gauge Valve for Control1Easy for Reading: This regulator is equipped with a 0180Psi dial gauge, making it easy to adjust pressure values. 2The Interface Parameters: The air conditioner has 4 holes, 3pcs 1/4in holes, and a 1/8in instrument port, which ensures firm connection. 3Simple Adjustment: The air pressure regulator has a plastic adjustment knob that allows for smooth flow settings, very efficient. 4Better Control: The air compressor pressure regulator provides accurate gas flow regulation and accurate measurement of gas. 5Easy to Install: Comes with a compact size and a light weight as well, the compressor pressure controller is very convenient to install within minutes.