FYI all schrader valves are not the same size- some A/C valves are larger or
smaller and cannot be removed with a tire-type valve core tool. I do a lot of
A/C work at my shop, i know this to be true from personal experience. Ditto
cigarette lighter size - My Valentine One radar detector plug, (american
standard size)  falls out of my folk's '00 GTI/VR6, and their old '96 GTI/VR6
too, because their lighters are larger diameter than standard american ones
such as my '95 Caprice ex-patrol car.