Low Side Gauge, Diameter 2 1/2 in, Working Pressure 30 in Hg to 500 psi, Connection Size 1/8 in, Color Blue, Gauge Type Low Side Gauge, Gauge Accuracy +/-3-2-3 Percent, For Use With R-22, R-404A, R-410A, Application Replacement Manifold Gauge for Manifold Gauge Sets