This is a great tool set for refrigerant testing, charging and evacuation. Can be used on all car A/C, commercial and domestic A/C and refrigeration systems. Gauges are marked for R134A R32 R410 R22 pressure reading. Color-coding on gauges, valves and hoses for convenient operating. Comes with a hook, a Joint and 3 hoses (red, blue and yellow). Manifold are 2-way and made of brass. Hoses working pressure:500PSI Burst pressure:2500PSI Working temperature:-20℃ to 60℃ Product function:This product is mainly suitable for the pumping and pressurizing operation of refrigeration maintenance, used for refrigerant filling of air conditioning system, and displays the real-time system pressure. Note: Compatible models are for reference only. Please confirm whether it is suitable when placing an order. Can not 100% Due to different production batches, the label words on the product are random and cannot be specified. The actual product may have slight differences or color differences. This does