Our new roof mounted bicycle holder with a stylish aluminium profile combines the unique features pioneered in our best selling Barracuda. Please note that to attach the Discovery to Rhino Heavy Duty Bars, a separate fitting kit is required. Lift the bicycle onto Discovery, the wheels fit into a moulded profile which holds the bicycle upright leving both hands free to secure the frame and wheels. Locking the bicycle into the frame holder also secures the Discovery to the load rack. Takes frame diameters from 0.8 up to 3.1-Inch (20 to 80 mm). Locks to both bicycle holder and roof bars. Base unit made of aluminium and UV-resistant composite material. Fits Rhino-Rack aero/sportz bars.