A.
anwered by: canteau
This freehub is only for Hope hubs, Crank Brothers does not produce a dedicated freehub for their wheels. If you would like to run Crank Brothers wheel as a single speed you can use a spacer kit like the one offered from Surly.
http://www.treefortbikes.com/product/333222338205/1307/Surly-Single-Speed-Spacer.html