InterDynamics Certified AC Pro Car Air Conditioner Adapter Valve, Converts R12 to R134A Refrigerant, for 7/16 Inch Low Side Port, VA-1L

Works as described. But if you are retrofitting your car from R12 to 134a, you might want to consider getting a full retrofitting kit. You get 3 cans of 134a, both low and high side adapters, and the hose/gauge to run the can into your car. The full set I got was only about double the cost of this one fitting. I bought this fitting to work with the pierce valve I got to allow us to charge our freezer that uses 134a, but had no fill port on the line. Now I can charge it using automotive style 134a refill cans.

Cheap price

Perfect for what I needed. I wish I could've found one of these in a real physical store, but Amazon saved the day after I had gone to Autozone and Home Depot... This works excellent if you're trying to refill an R12 system with R134a, works flawlessly and doesn't leak.

Worked fine on adding R134a to refrigerator through a "saddle" valve which hade the r12 fitting.

worked as intended. seemed to be good quality