well I've bought nozzles from 2 companies - neither were wide enough for the teflon tubes.
My mate got me some last year that were the right size, but alas only 1 0.4mm and a half dozen 0.5's
And as you have to change nozzles in matched pairs, it wasn't a suseful as he hoped :-)
I supposedly bought the same thing from the same company - hole too narrow.

But getting nozzles with a hole wide enough for the teflon tubes is a nightmare.
They don't list the shaft diameter on ebay, or on any website I've looked at.
I satill don't have anywhere to buy them as I'd like to change the creator x from a 0.4 and a 0.5 back to 2 0.4's.