Why is there no 7/16" Listed in the first post? I came into this thread to check and add my findings about 7/16"

I will post my images/findings about the cuplex and 7/16" Fittings once I get it up and running tonight or tomorrow
Someone correct me if I'm wrong (haven't had much sleep), but I assume the 7/16" ID x 5/8" OD compression fittings should fit whatever works with the 3/8" ID x 5/8" OD fittings ... since the outside diameter is the same...