Hope Pro 5 Rear Hub - 12 x 148mm, 6-Bolt, XD, Red, 28H. Rear Axle 12mm Thru x 148mm. Cassette Body Type SRAM XD. MPN: RHP528R148XD - Hope - Pro 5 Rear Hub - Rear Hub. Improved sealing to stop dirt ingress and to reduce drag, while the Labyrinth seals have zero drag for incredible freewheeling performance.