Auto Air Conditioning Tools > Manifold Gauge Manifold Gauge Set Application:R12, R22, R134a, R404a 501017 Add to Inquiry Cancel Manifold Gauge SetConnection:1/4SAE Application:R12, R22, R134a, R404aFeatures:High quality aluminum alloy valve body. Gentle and comfortable design hand wheel structure. Prevalent streamline design pressure gauge. Durable product quality. Quick discharge needle valve.