Bought this used but not abused DBS some time before Christmas. It has mostly Dura Ace EX parts.Columbus tubing, my guess is Aelle R, the butted version of Aelle. (the Columbus sticker says butted and it has a 26.8 seatpost). I have the Dyna Drive pedals but opted for adapters and put on a cheap Shimano wheelset with Kenda Kwicks so I can use it as a commuter when winter has left.