Product Description The can be used for 11- and 12-speed You can use the SRAM XDR freehub body for Zipp 176 and 177 hubs as a spare part or for converting to SRAM 11-/12-speed. Specifications:Application:Road, Triathlon & Time Trial, CyclocrossFreehub:SRAM XDRGearing:11-/12-speedFreehub Body Type:177Compatibility:Zipp 177 hub (as of 2015)Zipp 177D Disc hub (as of 2015)Zipp 176 hub (as of 2018)Zipp 176D Disc hub (as of 2018)Zipp Super 9 Track DiscZipp 900 Track DiscTechnical Information:Freehub Body Material:aluminiumBearings:steel (61903)Manufacturer Number:11.2018.062.000 Contents:1 x SRAM XDR freehub body1 x spacer Manufacturer: SRAM LLC 1000 W. Fulton Market 4th Floor Chicago IL 60607 USA info@sram.com Distributor: SRAM Europe Sales and Services B.V. Paasbosweg 16 3862 ZS Nijkerk Netherlands info@sram.com