RockyMounts TomaHawk Upright Mount No bike frame contact - simply ratchet the hook over the front wheel and secure the front/rear wheelstraps Fat bike ready (up to 5" tires) out of the box. Includes two wheel strap extensions Swingarm easily adjusts for driver side and passenger side installation Mounts to all styles of crossbars - round, square, factory, aero Holds all styles of bikes, 20 - 29" wheels (except those with front fenders) New Easy-Load wheel straps make loading bikes easier than ever