The Vevor 4-way AC manifold gauge set is designed for refrigerant charging, evacuation, vacuuming, and recovery work on automotive, household, and commercial air conditioning systems. It supports R22, R404A, R410A, and R12 refrigerants and features dual-scale gauges for clear pressure and temperature readings. Four color-coded 5' hoses and independent high-side, low-side, vacuum, and refrigerant valves help provide precise control during service. Solid brass fittings and an aluminum valve body add durability for repeated professional use. The included accessories and carrying case make it a complete service kit for HVAC and automotive applications.