The vacuum pump has a simple Oil Fill Port for a clean pour, and has a Oil Drain Plug beneath the oil reservoir. The spillage meter will help to check the proper level of oil easily. HVAC manifold gauge set is great for diagnosing and repairing AC systems, used for R12, R22, R134a Leak detector is included, to trigger on all halogenated refrigerants including HFCs, CFCs, HCFCs and blends. This item is in the category "Business & Industrial\HVAC & Refrigeration\HVAC & Refrigeration Tools\HVAC & Refrigeration: Gauges & Probes".The seller is "best-invest4u" and is located in this country: US. This item can be shipped to United States.