FH-BUU015 Freehub Body is a replacement part for your 9-10-11-12 speed hubs and wheels with 17mm axles. It is compatible with Campagnolo models from 2012 to now, such as Bora Hyperon, Shamal, Eurus, ZOnda, etc. Plus, it is also compatible with most Fulcrum wheels such as Quattro, Racing Zero, Racing 1 and Racing 3.