These light up handlebar streamers will please any evening bike riders, kids and adults alike. They are perfect for light parades, festivals, camping, and more! Handlebeam lights fit into nearly all bike handlebar grips with holes on the ends. Adapters are included if necessary to replace handlebar endcaps without holes. Two small barbs on the post keep the Handlebeams from falling out, but they can be easily pulled out when not in use.