A thorn hole in a gravel tire's tread becomes a workbench fix with the Lezyne Tubeless Pro Plugs, and the same tire goes back on the bike afterward. These mushroom-style bike tire plugs fill the hole and seal it from the inside of the tire. That extends the life of a tubeless tire that a puncture would otherwise sideline. What Our Gearhead(R) Experts Are Saying:"The abrasive pad and rubber cement in the kit are what make this repair hold, so I never skip them. The plug seals against a prepped surface, and the tire stays in service instead of being retired."