6-pawl design means larger cartridge bearings in the freehub for a significant increase in hub longevity . 6 double toothed pawls housed in the hub shell engage with the ratchet ring on the cassette for greater pawl contact, less wear and a better seal . Forged 6061 aluminum body with 5 sealed cartridge bearings. Through-axle models include axle and nuts. International Standard 6-bolt disc rotor mount. 345g (10mm)