What size are they? I have adaptors in my transmission so I'm going to assume the trans itself is tapped for standard (maybe NPT) and the adaptors are to go to a metric line... but if that were the case then my universal trans cooler probably wouldn't have gone on as easy as it did. Well, that's assuming the trans cooler used standard thread.
Any help would be appreciated because I don't want to drag these huge lines down to the local HD/Lowes .

 

5/16" inverted flare