Review on 🌡️ AJ Tools CHIMG777 Manifold Gauge Set: Optimize Your HVAC System's Performance by Rich Rickenbaugh

Pays for itself with first use. The hose and the connections make a solid impression. I have no leaks. I took someone's suggestion of putting teflon tape on the threads. Also be careful, the o-rings can come loose. Mine stayed in place but if it comes loose I can see it's going to be hard to find on the floor. ARS tried to charge me $700 to add Freon to my block. It's in degrees Celsius, but it's easy to convert. I don't know how long the gauge will last, but for the average layperson, it works for me.