Range 0 - 100 PSI. Red or Blue LED display. Mounts in a standard 2-1/16" hole. Internal sensor fits a 1/4" air line. Easy installation, simply hook up your existing air line and 12 volt power to the gauge. Limited lifetime manufacturer's warranty. Made in the USA.  

NOTE: This gauge fits Peterbilt and Kenworth models 2005 and older. Also fits Freightliner, International, Mack, Western Star, and Volvo models with 2-1/16" gauges on the dash.

Peterbilt and Kenworth 2006 and newer need Smart Gauge instead.