Stan's tubeless system converts your existing wheel set to tubeless. Allows you to use either standard or tubeless tyres. Save a lot of money and weight over purchasing other Tubeless Systems.
Will fit 21.5-25mm rims, Mavic 223, 221, 317, 517, 519, 717, 719, Sun 0 XC, UFO, Sub4, DT 4.1, etc...