Review on QDJUNE Retrofit Fitting Adapter Conversion by Obhed Mac

I bought these adapters to convert my 1977 Mercury 351 from R12 to R134a. These adapters bent the valve stems on both the high and low sides of my AC system, costing me nearly hundreds to replace the lines. Luckily I was able to get the valves fixed and new ones to fit from Advance Auto Parts. I should have read the reviews before purchasing.