The Thule Doubletrack 990 Bike Rack is a lightweight platform hitch with adjustable mast hooks that loads and unloads in seconds while transporting bikes safely and securely. The foldable center mast's ratchet hooks move independently to grab, hold and stabilize each bike quickly and easily. Reinforced wheel trays slide independently along platforms to eliminate bike-to-bike contact. A hitch adapter is included to accommodate 1 1/4in. or 2in. receivers with one product.