Campagnolo freehub body ED 9-12-speed 12 mm, for hubs and wheels with a 12 mm axle and industrial ball bearings, for Campagnolo cassettes
Compatible with the industrial-bearing hubs of Campagnolo wheelsets featuring a 12 mm axle and a 30 mm diameter pawl housing.
This freehub body is also compatible with Fulcrum hubs featuring a 12 mm axle
These freehub bodies are designed for 12 mm diameter axles and are therefore not suitable for Campagnolo wheels with classic tapered bearings. These require freehub bodies for 17 mm axles. The new Campagnolo WTO and Shamal Carbon Disc wheels have a larger pawl housing (33 mm). These freehub bodies are not suitable for those either.
Herstellerinformation: Campagnolo, Via della Chimica 4, 36100 Vicenza, Italy, https://www.campagnolo.com