NiteRider Pro Series Handlebar Mount Handlebar and helmet mounts for NiteRider lights.Handlebar mount for all systems that use the slider mounting clipCompatible with the follow systems: Pro Series, HID Series, Classic Plus and Select, Evolution and Digital Evolution, HeadTrip and Digital HeadTrip, TrailRat and TrailRat Select, RoadRat, Digital Patrol LED, Digital Patrol, Pre 2001 systemsFits 25.4-35mm handlebars NiteRider Mounts Light Part UPC: 702699010505