SHIMANO XT-M770 rear Q/R hub, 135mm x 32h - sil Axle: 10x135mm QRCassette Body Type: Shimano 9/10/SRAMF/R (Model): RearHoles: 32hHub Center to Flange: 34mmHub Color: SilverHub Drilling: 32spokesHub Flange Diameter: 44mmHub/Brake Compatibility: Rim BrakeRear Hub Spacing: 135mmSkewer Included: YesWeight: 408g