DT Swiss 180 Carbon Ceramic hubs have a carbon center section with alloy flanges and ceramic bearings.Superlight star ratchet systemItem SpecificationsColorWhiteIntended UseRoadHub Drilling28spokesRear Axle Type10x1Cassette Body TypeShimano 11Hub/Brake CompatibilityRim BrakeRear Wheel TypeRoadRear Hub Spacing130mmSkewer IncludedNoDefined ColorWhite