The Air Tubeless Tire Repair Kit plugs a tubeless puncture and reinflates the tire in the same motion, so a flat doesn't mean digging through two separate tools on the side of the trail. A single 16-gram CO2 cartridge brings an average tubeless mountain bike tire above 50psi, enough to get back to riding rather than just limping home. A Presta valve core remover built into the cap handles a stuck or faulty valve without adding anything else to the kit. What Our Gearhead(R) Experts Are Saying:"I plugged a sidewall cut and watched the tire come back up to pressure without ever putting the tool down. One motion, and I was back on the bike before I'd even finished swearing at the rock that caused it."