If our image makes it look as if the Stan's No Tubes Tubeless Rim Strip is a tube, rest assured, it isn't. The Stan's Rim Strip has a Presta valve stem built right into it. It has a removable core -- not only good for replacing damaged valves but also for applying sealant.
Stan's No Tubes Tubeless Rim Strips should fit most standard 26in diameter MTB rims that are 21.5 to 25mm wide. They work with Mavic's 223, 221, 317, 517, 519, 717 rims, and 719, Sun's 0 XC, UFO, and Sub4, as well as DT's 4.1, and most other non-Freeride, non-AM, non-DH rims.