>>28503525
There’s the quick connects for R134a

They’re not threaded. Quick connect and then a knob to push in the shrader valve.

And then the other one is a can tap for the self sealing cans. Some other people like the puncture ones. I never had an issue with the self sealers, flip that can upside down on a hot day and you can send 2lbs of liquid into the low pressure line real quick.