Stan8242s tubeless system converts your existing wheel set to tubeless it allows you to use either standard or tubeless tyres saving hundreds of dollars and weight over purchasing other tubeless systemsthe original kit for 29er wheelsapplications are limited with the newer rim designs on the market but it is designed to fit the mavic 520 touring sun rhyno lite 29er and similar rimsmolded rims are equipped with 32mm removable core presta valve stemsthis kit includes pint of tire sealant