GlowShift’s Black 7 Color Series Nitrous Pressure Gauge allows you to easily monitor your car’s nitrous pressure levels from 0 to 1600 PSI. Monitoring your nitrous pressure levels ensures a sufficient amount of pressure is being delivered to your engine, and this NOS pressure gauge can install directly to your nitrous tanks for extremely accurate readings. You’ll also have the classic look of an analog gauge with an illuminated red needle that sweeps 270 degrees and choice of a blue, green, yellow, purple, red, teal or white LED display on a Black gauge face.