Review on [2022 Upgraded]4 Way AC Manifold Gauge Set for HVAC Gauges with 5FT Hose, 3 Acme Tank Adapters, Adjustable Couplers and Can Tap - R404A R134A R22 R410A Refrigerants by John Camelio

Very functional and strong sensors. Since you're a four-valve, you can do whatever you want with it. Easy to use. However, the supplied instructions leave a lot to be desired. Obviously the red hose (4000 psi) goes to the high pressure valve and the blue to the low pressure valve. Vacuum and refrigerant valves as well as opening and closing directions are clearly marked. But the hoses have two seemingly identical connector ends. You are not. The longer side with the stem should be attached to the sensors (I think). This is not shown in the one-page guide. Also, they are a bit expensive. I wouldn't say the quality is lacking, but they seem like they should be under $80.