Blank Bicycle Headtube Plug For Entry Hole When Not Utilizing Cables

Blank Headtube Plug
Designed to Plug headtube entry holes when not utilizing cables in them
Fit in most unused headtube cable entry holes in bicycles equipped with electronic drivetrains. 
As an example, these are compatible with the Trek Procaliber, Top Fuel, Fuel EX, Checkpoint and Checkpoint+ equipped with SRAM or Shimano wireless drivetrains.
These fit most brands of bicycle frame head tube entry holes that are designed for use with 4mm cables
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