DT Swiss 350 Classic Flange Center Lock Disc Hubs. Features: 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 Micro Spline versions enable the use of MTB cassettes on 12x142 road hubs with proper chainline HG 11sp road: Compatible with HG splined Shimano/SRAM 11sp road cassettes. Also compatible with Shimano/SRAM 8-10sp cassettes with spacer DT Swiss spoke calculator: https://spokes-calculator.dtswiss.com/en/calculator Specs: Model:350 Ratchet Front Rear:rear (Micro Spline) Axle Spacing Mm:12x142 Hole:24 Spoke:J-bend Brake:Center Lock Color:black Weight:253g