The Vevor AC manifold gauge set is a complete 4-way refrigerant charging and testing kit designed for automotive AC systems, household refrigerators, and small-scale refrigeration equipment. It supports R134a, R404A, R1234yf, and R22 refrigerants and includes color-coded gauges for easier pressure readings. Heavy-duty 5' hoses, brass fittings, and an aluminum valve body help provide reliable sealing and durable performance. The kit also comes organized in a carry case for convenient transport and storage.