VIAIR 90085 160 PSI 1.5" Single Needle Air Gauge 1.5 Inch Black Gauge Face Reads up to 160PSI or 11 bar with a black background. 1/8 inch NPT male fitting on the back. (Requires an 1/8 inch Female NPT compression fitting to connect to an air line.) Reads in PSI and bar Typically used to monitor pressure in air suspension systems or onboard air systems.