Park Tool TPT-1 Tubeless Tire Plug Tool. A puncture in your tubeless tire doesnt have to be a death sentence for your ride. This handy carry-along tool repairs small punctures and cuts in tubeless bicycle tires without removing the tire from the rim getting you back on the trail in no time. The TPT-1 easily plugs the hole by inserting one of the 5 included vulcanized rubber plugs into the puncture. This shrinks the puncture down to a manageable size allowing the tubeless sealant to do its job and reestablish a seal. The unique sliding plug retainer holds the plug in place and prevents it from being pulled back out as the tool is removed. Everything is stored in a compact package that fits easily in a saddlebag or backpack pocket.