Wanted Fluted 26.8 seatpost

[jazzibizznizz]

This may be a bit of a long shot, but I'm looking for a fluted seatpost. The diameter is 26.8mm,and I'm not sure about the length, other than that it needs to be longer than the 4" posts that are more common on road bikes.
There may not be such a thing, in which case I will stick with a plain rounded one, but if they do exist I quite fancy one for my Overburys.
Thanks