The Thule Rapid Podium Foot Pack contains four feet, which can be mounted on a wide variety of racks and rails to provide a versatile mounting platform for kayak racks, bike racks, and cargo racks. Rapid Podium feet are compatible with Thule's WingBar Evo, AeroBlade, and ProBar racks. For added security, lock the feet to your rack with a set of Thule One Key locks (sold separately). The Rapid Podium Foot Pack is backed by a lifetime warranty.