Reliable solution for repairing a tubeless bike tire tread at home or in a workshop These mushroom plugs fill the hole and seal the puncture from the tire, maximizing the life of your tire Includes three sizes of plugs, with two 3 mm, two 3.5 mm, and two 4.5 mm plugs Kit also includes two abrasive pads and two rubber cement tubes to ensure a secure seal. TUBELESS PRO PLUGS