SRAM X.9 Thru Axle Rear Hubs3 Pawl driver mechanism and steel freehub body for durabilitySealed cartridge bearingsShell is machined to minimize weightPlease note that radial lacing voids the manufacturer"s warrantyItem SpecificationsColorBlackWeight395gIntended UseMountainHub Drilling32spokesRear Axle Type12mm Thru-axle,10x1 bolt onCassette Body TypeShimano 9/10/SRAMHub/Brake Compatibility6-Bolt DiscRear Wheel TypeMountainRear Hub Spacing142mmSkewer IncludedNA, Bolt-OnDefined ColorBlack