900 Rear Hub Durable Double Time four pawl mechanism offers quick engagement. Sealed cartridge bearings. Angled flanges provide optimum spoke geometry. Axle end caps for alternate frame specs are included (except for Boost hubs) and can be swapped without tools. Item Specifications: Defined Color: Black, Skewer Included: Yes, Spoke Interface: J-Bend, Rear Axle: QR x 135mm, Rear Axle: 12mm Thru x 142mm, Color: Black, Flange Diameter, Right: 60, Flange Diameter, Left: 58, Weight: 275, Hub Drilling: 24, Bearing Type: Sealed Cartridge, Hub/Brake Compatibility: 6-Bolt Disc, Cassette Body Type: XD 11/12 Speed, Center to Flange, Right: 20.5, Center to Flange, Left: 34.25,