Replacement High Side Pressure Gauge, Diameter 3 1/8 in, Working Pressure 0 to 500 psi, Connection Size 1/8 in (M)NPT, Color Red, Gauge Type Liquid Filled, Gauge Accuracy +/-1.00 Percent, For Use With R-12, R-22, R-502, Application Replacement Manifold Gauge for Manifold Gauge Sets