Dynaplug Megaplugs are constructed from viscoelastic rubber impregnated cord and 6061 aluminum tip. These plugs are specially designed to repair large punctures in tubeless bicycle tires. They are approximately three times the thickness of a standard plug (approximately 7/32″).When needed, just remove whatever caused the puncture, firmly push the tools novel insertion tube straight (without twisting) into the hole and extract the tool depositing the repair plug in the tire. Used in the tread, sidewalls, and along the rim. Add as many plugs as needed, folding each tail against the tire as you insert plugs.