A 7/16 wrench fits a hex size of 0.4375". An 11 mm wrench fits a hex size of 0.4331". The 11 mm wrench was too small to fit the brake line connection hex. Hard to believe that the hex flats being 0.0044" wider didn't allow the 11 mm wrench to fit. I had the same issue with the 9/16" hex on the OEM caliper hose connection. (Note: I'll re-emphasize that the caliper OEM hose connection is a fixed male fitting. The entire hose rotates as you unscrew this connection. It has to be disconnected after you disconnect the connection to the brake line.) The Goodridge SS brake line had a 7/16" hex flat on the hose connection to the caliper and was a slip fitting.

My 2007 Coupe has the Auto-Stick tranny.