The name Airstop says it all. Michelin's Airstop tubes use a proprietary butyl rubber so your tires stay up to pressure longer. And, the reinforced valve stem seam is ultra sturdy, 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).
Weight: 194 grams (Schrader valve); 196 grams (40mm Presta valve); 198 grams (60mm Presta valve)
|26 x 1.6-2.1 (40mm Presta valve)||3528702158876||15433|
|26 x 1.6-2.1 (60mm Presta valve)||3528701251998||43293|
|26 x 1.6-2.1 (Schrader valve)||3528701251943||90430|