It was just the Vibrant fitting it did not do much but did open it up a little, with the OD being 5/8 it brings the ID close to half inch with the wall of the hose plus the fitting being pressed into it, these things are mass produced who knows what happens with the tooling after they make a few thousand.
I was just being cautious I wanted to ensure there was no restrictions at the narrowest point, last thing I wanted was oil collecting and my turbo seals failing prematurely.