The Vevor AC manifold gauge set is a 3-way refrigerant charging and diagnostic kit designed for automotive AC systems, household refrigerators, and small-scale refrigeration equipment. It supports R134a, R404A, R1234yf, and R22 refrigerants, with dual-scale gauges for clear pressure readings and a sight window for charge monitoring. The kit includes three 5' color-coded hoses, quick couplers, adapters, sealed can taps, and service tools packed in a carrying case. Solid brass fittings and an aluminum valve body provide durable, leak-resistant performance for charging, evacuation, and troubleshooting tasks.