+xHexagonal shaped tubing is in itself very rare and quite hard to find. We do not have any preferred supplier for those tubes. I have yet to see any in the exact specification you have asked for.
Thank you for the reply Warren,
I can certainly agree that it's rare - I never thought it would be so hard to find.
In your experience, is this the case for all tubing other than circular? I am looking for a shape that is angular. So far, square carbon fiber tubing seems to be a bit more common.
-Jack18