Product Description End caps for Zipp Cognition Disc V1 rear hubs (center lockring). Technical Information:Axle Type:10 x 135 mm quick releaseFreehub Body:Shimano Road, Campagnolo, SRAM XDRCompatibility:Cognition Disc V1 rear hubs202 NSW Disc wheels303 NSW Disc wheels404 NSW Disc wheels454 NSW Disc wheels up to 2021 model808 NSW Disc wheels858 NSW Disc wheels up to 2021 modelCampagnolo version also suitable for Cognition V1 Generation 2 rear hubs with rim brake (from serial number 21P81803697*) * printed on the hub close to the Zipp logo Manufacturer Numbers:Shimano:11.2018.048,010Campagnolo:11.2018.048,020SRAM XDR:11.2018.048,030 Only available to European & Russian customers. Contents:2 x Zipp Cognition Disc end caps 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