* Replacement 9 to 12 speed freehub body for all hubs and wheels with oversized axles (17mm, used on most 2012+ wheels)* Compatible with the majority of Campagnolo wheels and hubs produced since 2012, including Bora, Hyperon, Shamal, Eurus, Zonda, etc.* Also compatible with most Fulcrum wheels produced since 2012, including the Quattro, Racing Zero, Racing 1, Racing 3, etc.