The RockBoard LED Dampers are defractive caps for LEDs that will dampen the glare of bright LEDs on your pedals. The specially designed matte defractive dome structure defracts the light of LEDs, so the pedal's status is still clearly visible in broad daylight as well as in the dark. The LED Dampers use a high quality self-adhesive, so they stay in place, doing their duty but can easily be removed without residue.