JB Industries M2-925 Class One Glow In The Dark Manifold Gauges, 3-1/8" Refrigerants: R-22, R-404A, R-410A - Red, high side gauge Pressure steel case illuminated - Class One 1% accuracy 0 to 800 psi - Surge dampened for accuracy High impact clear Lexan lens - Recalibration screw Full size brass movements - 1/8" MPT connection - Made in the USA