Viair Digital Tire Inflation Kit – 180 PSIProduct Description Read pressures up to 180 PSI and 14 BAR. The Digital Tire Inflation Kit features a normally closed air gun that can be opened by simply squeezing the inflation trigger. Because this tool is a normally closed type, the Tire Inflation Gun works with all Onboard Air Systems with an air tank. The included blue backlit digital pressure gauge reads in PSI, BAR, KG CM & KPA scales. Please Note: To be used on Portable Automatic compressors