yes, a DA TRACK hub. high flange.

there isn't any difference between the bearings and races on a DA road hub, when compared to a DA track hub. what do you think, that they somehow make the track hub to be more delicate or something? Dura Ace is Dura Ace. it's some of the most durable, high quality stuff on the market, just because something is manufactured for the track, doesn't mean it's somehow more fragile that something made for the road. there are plenty of dura ace road hubs still on the road that have been through all kinds of sloppy weather, guess what, they aren't sealed bearing. in fact, NONE of the standard shimano road hubs are sealed bearing. i don't know about their prebuilt low spoke count DA labelled wheels, or the 500 and 540 wheels, but the hubs that come with the groups are unsealed. the biggest different between the road hubs and the track hubs are the outter dust covers on the road hubs, and they don't do squat when it's downpouring, or there's a ton of salt and grime on the road. you're not going to ruin a cup and cone hub by riding it in the real world.