A.
anwered by: canteau
Most of the Specialized wheels that use DT Swiss freehubs use the Star Ratchet freehub if your wheels are listed as using DT Swiss 350 or 240 internals this freehub will not work with them.
If your Roval wheel does have DT Swiss internals and uses the 3-pawl freehub, most likely listed as DT Swiss 370 internals, this freehub will work.