Goplus 48" Universal Car Wagon Aluminum Roof Top Rail Rack Cross Bars Luggage Carrier Load Capacity: 130lbs Length of Cross Bars: 47 1/5" Adjustable Width: Up to 48" Weight: 6 lbs;Height: 7" Package Include: 2Crossbar, 2Key(The type of the key is ship in random!), 1 x Allen Key