Tubeless tires are the bees knees up until you get a puncture that’s too big for your sealant to plug up. One solution is to resort to a tube, but DynaPlug offers another option. With help from a threaded CO2 cartridge the system fills the tire and plugs the hole in one simply motion. The kit comes with the DynaPlug Racer $43.99 tool, four plugs and two CO2 cartridges. Could really save the day when you’re miles from home and is much easier to carry than a spare tube.