 You know, some rationale against doing that yourself. Oh, yeah, the can hooks up. The gauge, the thing hooks up. You can put it in, but not anymore. And there's different kinds of Freon. There's different fittings. Why don't you discuss that for a few minutes? Well, you know, in the old days, we had, they called it Freon, which was the old R12 refrigerant. And that got replaced by the HFC-134A refrigerant.