SKP G50-10-01 Air Pressure Gauge for Air Compressor WOG Water Oil Gas, 2" Dial Center Back Mount 1/4" NPT 0-150 PSI, 2 Pack Standard Back Mount 1/4" NPT Connection Pressure Range: 0-150 PSI 2"(50 mm) Plastic Dial Dry Pressure Gauge Suitable for Air, Water, Oil, & Gas Plastic Cover