Product Description Specifications:Application:Cyclocross, Gravel, RoadFreehub Body Type:3 pawlsFreehub Body Material:aluminiumBearings:deep groove ball bearingsModels:Shimano: Freehub:Shimano RoadGearing:8-/9-/10-/11-/12-speedNote:For assembling 8-/9-/10-speed cassettes on a Shimano road rotor, a 1.85 mm spacer ring is required (included).Compatibility:E-Sync, Neo, Neo UltimateManufacturer Number:ZH2579 Shimano Micro Spline: Freehub:Shimano Micro SplineGearing:12-speedCompatibility:E-Sync, Neo, Neo UltimateManufacturer Number:ZH2578 SRAM XDR: Freehub:SRAM XDRGearing:11-/12-speedNote:For assembling XD cassettes on an XDR rotor, a 1.8 mm spacer ring is required (included).Compatibility:E-Sync, Neo, Neo UltimateManufacturer Number:ZH2577Contents:1 x 1 x spacer ring (for Shimano Road, SRAM XDR) Manufacturer: Stan's NoTubes 202 Daniel Zenker Dr Big Flats NY 14814 USA info@notubes.com Distributor: Hermann Hartje KG Deichstraße 120-122 27318 Hoya Germany info@hartje.de