Affordable Swiss performance With DT's ratchet system (36t), all of the teeth on each side of the ratchets engage simultaneously every time. This creates much smaller point loads and results in the legendary reliability of Ratchet System hubs Center Lock disc Steel cartridge bearings Refined end caps allow for easier disassembly HG 11sp road: Compatible with HG splined Shimano/SRAM 11sp road cassettes. Also compatible with Shimano/SRAM 810sp cassettes with spacer DT Swiss spoke calculator: https://spokescalculator.dtswiss.com/en/calculator