Review on GooMeng 3PCS Color Coded R12 R22 R134A R410 Refrigerant Ball Valve for AC HVAC Refrigeration Charging Hoses - Air Conditioning Refrigerant Enhancer by Alejandro Lane

Great price. However, one of the fittings was "sticky" and had difficulty turning when tested prior to unscrewing. I used it anyway and it worked. there were no leaks or binding, so the problem was not in the threaded part of the bushing, but in the connection of the shaft and bushing. Still not smooth like the other 2 but it works. And it's a great price.