Panel Gauge 300 PSI 1.5 Inch Diameter 1/8 NPT Back Stem. Panel gauges have a bracket in the back that secures it to a sheet metal dash. This one is 1.5 inch diameter and the back stem thread is 1/8 NPT. 0-300 PSI. Great for ARB line pressure, air bag pressures, Lovell T-case pressures, etc.
Details:

• 300 PSI
• 1.5 Inch diameter
• 1/8 NPT back stem thread