GUP's canisters include a latex-based formula which can simultaneously inflate and seal most common punctures quickly. Works with tubes, tubeless, and tubular tires. Proven to seal up to a 6mm puncture on tubeless tires, getting you back in the saddle faster. Enough pressure to seat a tubeless tire onto a rim–an enduro racers dream come true. For use with presta valves only. Fills a 29 x 2.4 MTB tire up to about 29psi.