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. The item "53 Way Manifold Vacuum Gauge Set R134a R410a R22 A/C AC HVAC Refrigeration KIT" is in sale since Tuesday, May 14, 2019.This item is in the category "Business & Industrial\HVAC & Refrigeration\HVAC & Refrigeration Tools\HVAC/R Gauges & Probes". The seller is "greatshoppingday2012" and is located in Fontana, California. This item can be shipped to United States.