Trans cooler lines

Can anybody save me the effort of climbing under my APV in the cold?

I need to know what size the steel transmission cooler lines are? Not length, just diameter and fittings.

TIA

5/16" od tubing, and the fittings could be o-ring or inverted flare, depending on the year of your van.

Thanks Rich,

Pretty sure they're flares. Just couldn't remember the size & I need to pick up a length for a bypass.