Universal Refrigerant Compatibility: Suitable for use with non-flammable refrigerants like R134a, R22, and R410a. This AC vacuum pump and gauge set is ideal for automotive AC, HVAC work, refrigeration, and industrial applications High-Efficiency Vacuum Pump: The 4 CFM single-stage vacuum pump, powered by a 4-pole high-torque motor, delivers an ultimate vacuum of 5 Pa. With a 0.27 qt (260 ml) oil capacity, it ensures efficient refrigeration system maintenance Precise Pressure Monitoring: The upgraded PRO manifold gauge features ±1.6% accuracy and enhanced pressure resistance. It allows you to monitor and adjust system pressure. The oil window ensures clear readings with a dual bar/psi unit display Secure & Easy Connection: The 3.94 ft (1200 mm) three-color hose (red, blue, yellow) provides clear identification for a secure connection. With a working pressure range of 800 PSI to 4000 PSI, it is built to handle demanding jobs Everything You Need: This kit includes a vacuum pump, manifold gauge set, three-color hose, an R410a adapter, R134a quick couplers, a 1/4" SAE to 1/2" ACME adapter, a leak detector, an R134a can tap, a bottle of 0.35 qt vacuum oil, and a carry bag