M2-250 JB Industries Low Side Compound Gauge (Blue) for R-12 / R-22 / R-502 - 2-1/2" - STANDARD 2-1/2" GAUGES - These high quality, all steel case standard gauges are identical to the gauges used on our manifold sets. They are surge dampened for accuracy. Gauges are sensitive instruments and therefore should not be subjected to pressures beyond scale.
R-12R-22R-502