BBB Bicycle Race Number Plate Mounting Attachment Seat Clamp Number Aerofix Number Plate (BeeBeeBee)

For use with aero seatposts. An adapter for attaching race number plates to the seatpost. Installation is quick and easy using special bolts that automatically drill holes in the plate. The rubber O-ring fits securely onto the seatpost. The inner protective rubber prevents slipping and damage to the seatpost. Bolt spacing (C-C): 21mm Reference weight: 10g