Profile Elite Rear Female Cassette Hub - RHDProfile's Elite Rear Cassette Hub is hand made in the USA, it's a lightweight hub that's made to the highest standards possible. The Elite cassette is built with a heat treated aluminium shell and center axle and features Profile's Ultra driver which includes six pawls and springs creating 204 points of engagement which means instant engagement and a really loud buzz! The hub spins on over sized abec 5 bearings for less resistance and the heat treated