Shimano Alfine DI2 Rear Hub SparesThe Shimano Alfine DI2 Rear Hub Spares are replacement nuts and spacers for the Alfine DI2 Rear Hub.Features: SHIMANO Alfine NON-TURN WASHER FOR VERTICAL DROP TYPE END Shimano Part Number: KSMS7050001Buy Shimano Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.