This dual needle black face air gauge with amber back light is ideal for any suspension system with a maximum pressure of 200 PSI. Will measure two sources of air pressure on two scales of 0 to 220 PSI and 0 to 14 BAR. It has two 1/8" NPT male fittings on the back and includes two 1/8" NPT female compression fittings for ¼" OD airline. Comes with mounting bracket for easy installation on a gauge panel with 2-1/16" minimum diameter holes. 2" Dual Needle Air Pressure Gauge Air pressure Dial: 0-220 PSI Color: Black with Chrome Bezel Back Light (Amber) PSI/BAR Dial Scale Maximum Precision Two 1/8" NPT Male Connectors Two 1/8" NPT Female Compression Fittings for ¼" OD Airline Included Will fit on any dash panel with a minimum of 2-1/16" Diameter hole Measure two different air bag pressures For suspension system up to 200 PSI