Halo's flagship tubeless ready XC/All Mountain wheels featuring 120 point instant engagement pawls 21mm inner/26mm outer double wall, eyeleted, T10 heat treated Niobium alloy rim Built with double butted spokes and alloy spoke nipples Forged alloy shell, sealed bearings, International Standard 6bolt disc rotor mount Not compatible with HG 11sp road cassettes XD driver body sold separately, use HL3550 and HL355* endcaps