Features Details Universal Refrigerant Compatibility: Compatible with R134a, R22, R12, and R502 refrigerants, this AC vacuum pump and manifold gauge set is ideal for most automotive and HVAC systems, giving you versatile solutions for all your service needs. Powerful Efficient Vacuum Pump: This 3.5 CFM single-stage vacuum pump, powered by a durable 4-stage pure copper motor, delivers an ultimate vacuum of 5 Pa. With a 0.27 qt. (260 ml) oil capacity, it ensures efficient and reliable performance for maintaining refrigeration systems. Precision Pressure Monitoring: Equipped with an ultra-accurate 1.6% gauge, this AC vacuum pump and manifold gauge kit allows you to precisely monitor and adjust the pressure of your system in real time. The large viewing glass ensures clear, easy-to-read measurements every time. Secure Easy Connection: The included three color-coded 3.94 ft (1200 mm) hoses in red, blue, and yellow for clear identification and secure connections. With a working pressure range of 600 PSI to 3000 PSI, these hoses are built to handle demanding jobs. Everything You Need in One Kit: This kit got you covered for HVAC system maintenance: 1 single-stage vacuum pump, 1 manifold gauge set, 3 color-coded hoses, 1 set of R134a quick couplers, 1 can tap, 1 bottle of 0.35 qt. (330 ml) vacuum oil, and a convenient carrying bag for easy storage and transport.