The Rotary cassette is a high end Downhill cassette hub with a thru axle system. The new hub is designed to fit all DH frames with 157x12mm or 150x12 dropouts as two sets of cones are included. It's light enough for racing and strong enough to take big jumps. This hub is fully sealed, runs on 4 bearings and features an oversized alloy 7075 axle. To make sure the hub will hold up any kind of abuse, we used the best 7075 alloy for our cones and removed the steel inserts that we used before.