Built-in anti-wobble hitch device, Tilts down to allow access to rear-of-vehicle, even while bikes are loaded, Fits 20in - 29in wheels, Upright ratchet hooks easily adjust to different bike frame sizes. Designed for dependable performance in demanding outdoor conditions, SWAGMAN XTC2 TILT HITCH MOUNT PLATFORM 2-BIKE RACK|64671 helps you pack lighter and go farther.