Dura Ace is Shimano’s top of the range racing group set.
The Dura Ace track rear hub is lightweight but strong and rolls along on a 120mm spaced axle on super polished cup and cones with stainless steel ball bearings for efficient load displacement and easy maintenance.

These hubs not only look robust, they are robust. The spoke hole configurations are 28/32/36H.
The finish is the same anodized finish used throughout the Dura Ace track group set, and the weight of the hub is 298g.