OneUp Components Freehub Body Description: OneUp Components Freehub Bodies combine with OneUp Components Rear Disc Brake Hubs to accommodate Shimano MicroSpline cassettes. Note: Only compatible with OneUP Components rear hubs, and is not compatible with DTSwiss hubs or any other manufacturer that uses a ring or ratchet driving mechanism. Features: Freehub body with compatible with OneUp Component rear disc hubs Enduro 6903 precision bearings Includes 12 x 148mm drive side end cap