Review on Refrigerant Dispenser Repairing Manifold Charging by Aaron Gordon

I had no problems with it. I used it with a manifold to fill my car air conditioner and it worked fine. No leaks, extra o-rings included. It's bolted into small 12-ounce R134a cans that I bought at an auto parts store. After turning the knob all the way to pierce the can, I actually had to turn it back a little to allow the coolant to flow.