Machined to the tightest tolerances. Onyx hubs use sprag internals for strength, extremely low rolling resistance and infinite points of engagement. All Onyx hubs come standard with ceramic hybrid bearings so there is no need to upgrade.Ceramic hybrid bearings7075 Aluminum Hub ShellAdjustable preloadTitanium boltsExtremely low rolling resistance5 year limited warrantyMade in the USASilent instant engagement10 speed HG driverHardened heat treated stainless steel driverOptional alloy driver upgrade availableDrivers are convertible between XD and HGItem SpecificationsColorBlackWeight469gHub Drilling32Spoke InterfaceJ-BendCassette Body TypeShimano/SRAM 8, 9, 10 Speed , Shimano/SRAM 11 SpeedDefined ColorBlackRear Axle12mm Thru x 148mmHub/Brake Compatibility6-Bolt Disc ONYX Racing Products Mountain Rear Hub Rear Hub