Is this part easily convertable?

Hi all,

I download this hose clamp from McMaster-Carr. I have two questions. Firstly, is the part easily convertible so that I could achieve a 12mm ID? (Without doing a massive amount of configurations in a design table).

Secondly, what is the point of the 2 references that the designer has at the bottom of the feature tree?

Kind regards,

Dave.

SolidworksParts And Features