1Easy To Read: This air compressor replacement pressure regulator comes with a 0 to 1 MPa pressure gauge that makes adjusting the pressure value a breeze. 2Knob Adjustment: This air compressor regulator has a plastic adjustment knob for sleek flow settings. The knob has a locking feature that prevents it from turning when the knob is pressed. 3Accurate Measurement: This air gauge regulator is highly accurate, which can provide accurate gas flow regulation and accurate measurement of gas. 4Easy Installation: This air compressor pressure regulator has 3 holes, there are two 1/4 inch NPT holes and one gauge port 1/8 inch NPT, it is very easy to install. 5Wide Application: This air compressor replacement pressure regulator has a wide range of applications and can be used in power, energy and coal mining industries. 1 x Air Compressor Regulator 1 x Pressure Gauge 2 x Double Fittings 1 x Ball Valve 1 x American Style Quick Coupling Male 1 x American Style Quick Coupling Female 1 x PTFE Tape 1 x Bracket 2 x 1/4in x 1/4in NPT Male Fittings