JEGS A/C Manifold Gauge Set includes three 5 ft. long hoses, high-quality brass fittings and twist valves to make testing refrigerant easy and keep your Air Conditioning System cooling. The analog gauges are fitted with contoured knobs that are color-coded for quick, clear identification. The gauges read 0-500 psi on the low side, and 0-800 psi on the high side. This set can be used to test, evacuate and fill automotive air conditioning systems with R-410A, R-22, R-134a, or R-404A refrigerant.