Review on Orion Motor Tech HVAC Vacuum Pump and Gauge Set with AC Manifold Gauge Set, 3.5cfm AC Vacuum Pump and Gauge Set for R134a R12 R22 R502, Self-Sealing Can Taps Quick Couplers Included by Philip Davenport

Gauges and vacuum pump work but this kit can only tell you if there is a leak (keeping vacuum) and how much R134 you have in the tank have. due to pressure in the system. You cannot properly charge the system with this kit. There is no bleed screw on the yellow service hose or manifold so you are forcing air back into the system. I would buy another set if I knew.