Electra Hub Shiner Jewel Fits Most Standard Front & Rear Hubs. Not compatible with Shimano Nexus 8-Speed Internal Gear Rear Hubs, as Nexus 8-Speed Hub is too wide Set of two. Secures around hub and shines while you ride. To avoid loss, Electra recommends you remove loose items, such as hub shiners, when towing bicycle on a car rack. Blue