Thule"s 599XTR Big Mouth roof mounted rack supports a single bicycle with a self adjusting clamp and dual front / rear tie down straps to any vehicle roof cross bar system, p to 1-1/4" in width. The Jaw handle is easily reached at eye level and the system, an easily be switched from driver to passenger side when necessary. * Transports a single bicycle on a vehicle roof * (2) Securing straps for the front and rear bicycle tires * Clamps to bike frames up to 3-1/8"D * Works with existing roof cross-bars up to 1-1/4"W * Channel-style rack cradles bike tires in the upright position