Thule's Helium rack uses ultra-lightweight aluminum construction that makes installation and removal a snap, so you can put it on when you need it and easily take off when you don't. The cradle arms are spaced close so kid's bikes, women's frames and full-suspension rides fit no problem. Maximum bike stability is achieved with T3 cradles and bike-to-bike contact is eliminated with their No Sway Cage. Plus, Thule's Stinger Swinger mount fits 2-inch and 1 1/4-inch hitches with no tools so this rack fits all vehicles with hitches. The arms fold down for easy storage, the integrated cable locks your bikes and the installation knob locks the rack to the receiver.