GlowShift’s Mechanical Series Black Dial 200 PSI Dual Needle Air Pressure Gauge features two separate needles that allow you to closely monitor your vehicle’s changing suspension conditions from 0 to 200 PSI. Adjusting your suspension’s air pressure is extremely important since it directly affects the way your vehicle rides, and this dual needle air suspension gauge will let you know when to add more pressure for road imperfections or when to release pressure for a custom lowered look. Each gauge is essentially designed for anyone who has air brakes, air bags, an air horn or similar systems in their car or truck. GlowShift’s Mechanical Gauge Series comes standard with a cutting-edge design featuring a chrome body and ultra-bright white LEDs. Each 2-1/16” (52mm) gauge also features a black gauge dial, magnified clear lens, and dual red and green needles. By connecting to the factory headlight switch, you’ll be able to dim the gauge 30% when your headlights are turned on to reduce brightness while driving at night. GlowShift includes a one year limited warranty and free lifetime tech support with every purchase.