Our easy to read gauges feature 3 PSI scales (R134a, R410a, R22) and Celsius scale Color coded hoses help identify the hoses for added convenience Can be used for automotive or household air conditioning units. Suitable for home or business.Adjusting High or Low Pressure. Diaphragm valves with swivel seals for more positive seal and less wear. Durable rubber gauge cover for added support and protection. Comes with back hook for hanging the manifold gauge in place. Designed to meet 1/4 Standard SAE requirement for refrigerant permutation. This item is in the category "Business & Industrial\HVAC & Refrigeration\HVAC & Refrigeration Tools\HVAC & Refrigeration: Gauges & Probes". The seller is "bravenewworldbeta" and is located in this country: US. This item can be shipped to United States.