Replacement Low Side Pressure Gauge Diameter 4 in Working Pressure 30 in Hg to 400 psi Connection Size 1/8 in (M)NPT Color Blue Glow-in-the-Dark Gauge Type Non Liquid Filled Gauge Accuracy +/-1.00 Percent For Use With R-134A R-22 R-404A R-410A Application Replacement Manifold Gauge for Manifold Gauge Sets