Small Rear Wheel Hubs for Scooter 1,meterial:aluminium alloy 2,size:17mm/22mm 3,customer- ... .also pack as customer's request.DetailsWe have complete process for the production and quality assurance to make sure our products ... :17mm/22mm3,customer-made acceptable4, free sample, you just pay for the freight5, used for scooter, motorbike, bike, tricycle,segway etc. Pictures: