they have proven to be extremely durable

anti-odor and breathable

where the other axles have a flat washer

and CX riding

Box One Prime 9 Speed X-Wide Groupset - Multi Shift - 11-50T - 9 Speed netsuite-webdata-created they have proven to beBox hit the market for a six when they unveiled the wide range Prime 9 families of components. 454% range in a compact 9 speed package was unheard of until now! Box One is the top of the range drivetrain with all the bells and whistles. A full unibody steel cassette weighing only 365g, adjustable clutched derailleur and a dual DLC nickel plated chain make this the flagship 9 speed option from Box. Compatibility: The Prime 9 component range is not