Specifically designed for HVAC professionals and DIY enthusiasts, our 4 CFM vacuum pump kit reaches a 5 Pa ultimate vacuum. It includes a manifold gauge PRO, a 3-color hose, and a set of R134a quick couplers. Compatible with R134a, R22, and R410a refrigerants. Handle your HVAC tasks with ease! | Vevor | | 4 CFM AC Vacuum Pump and Gauge Set, 1/3 HP, Single Stage Rotary Vane HVAC Air Vacuum Pump, | Orange;Black | Best Buy