Easy-to-read gauges. 3 color-coded hoses. Complete diagnostic and service gauge set for use on air condition systems. Quick-connect fittings with high pressure safety valve. Color-coded gauges, valves and hoses. Specification: Gauge Reading: PSI. Operating Pressure: 500 PSI. Burst Pressure: 2500 PSI. Hose Connectors: 1/4". ACME Adapter: 1/4" Male to 1/2" Female. Hose Length: 40". Compatibility: R134A, R22, R12, R502 . Package Includes: 1x R134A R22 R12 R502 Manifold Gauge. 1 x ACME Adapter. 2 x R134A Adapter Connector. Color Coded Hoses Set.