Review on CPS Products MT7I7A6Q A/C Manifold Gauge Set: The Ultimate Solution for Accurate Air Conditioning Readings by Tim Morrison

Very high quality set of manometers. You can skimp on quality with some tools and still get the job done, but not in this case. I originally bought a set of Chinese made port freight for $60 and they leaked. Got through two sets with the same problem. How can you fix your air conditioner if you don't have a known good set of sensors? Sensors at the auto parts store were about the same price, and some "professional" (still made in China) versions were around $90. I checked the internet and saw that I bought them immediately. No leakage, great. You also don't need a water tap for California self-closing jars. The yellow hose screws directly onto the blue adapter with minimal coolant splatter. Stop wasting time, just join and you're done.