900 Rear HubDurable Double Time four pawl mechanism offers quick engagement1.8 mm spacer is included for use with XD cassettesSealed cartridge bearingsAngled flanges provide optimum spoke geometryAxle end caps for alternate frame specs are included (except for Boost hubs) and can be swapped without toolsItem SpecificationsBearing TypeSealed CartridgeCassette Body TypeSRAM XDCassette Body TypeSRAM XDRCenter to Flange, Left34.25Center to Flange, Right20.5ColorBlackDefined ColorBlackFlange Diameter, Left58Flange Diameter, Right60Hub Drilling28Hub/Brake Compatibility6-Bolt DiscRear Axle12mm Thru x 142mmRear AxleQR x 135mmSkewer IncludedYesSpoke InterfaceJ-BendWeight275 SRAM 900 Rear Hub UPC: 710845784767