Bienvenido a Cross Mountain Bikes!
These end caps involve beer and cycling, nuff said.
Stick these plugs into your handlebars. Tighten them up! Now drink! Have a beer! Then have another! Recycle the bottles! Then stick the tops on the Bar Tabs!! Jobs a good'un!
When too many trees have jumped out in front of you and scratched the tops to death simply change them for another pair....