Professional Auto AC Service Set: Orion Motor Tech's auto AC vacuum pump and gauge kit includes a 1/4 hp vacuum pump, a 3-way manifold gauge, R134a self-sealing & puncture-style taps, R134a quick couplers, vacuum oil, and 3 hoses for most AC repair works Efficient Vacuum Pump: Featuring an all-copper motor, this vacuum pump ensures efficient evacuation at a 3.5 cfm flow rate. Its aluminum alloy casing effectively dissipates heat, resists corrosion, while brass-fitted tethered safety caps prevent oil leaks High Accuracy Gauge Set: The AC manifold gauge provides precise real-time monitoring of your coolant's condition; the color-coded charging hoses are constructed with four layers to withstand pressures up to 600 psi (with a burst pressure of 3000 psi) User-Friendly Designs: Efficiently manage heat with the built-in cooling fan, monitor oil levels easily with the sight glass, and ensure swift oil emptying through the bottom drain valve. Includes 0.26 qt. Of vacuum oil for added convenience Wide Application: This A/C vacuum pump kit is compatible with various refrigerants, including R134a, R12, R22, and R502, making it perfect for both indoor and auto HVAC systems. Stay organized during storage and transport with the durable case and bag.