This item is currently not available.
MICHELIN's Protek Max tubes use a proprietary butyl rubber with a unique shape and design so your tires hold their pressure longer. For excellent durability, the tube is reinforced at the valve too.
Schrader valves are identical to those found on car tires. These valves are generally used on hybrid and children's bikes. Presta valves, which are found on most road and off-road bikes, are longer and thinner and feature a threaded tip, which must be opened to inflate (turn counterclockwise).