In good used condition it is missing the screw caps on each side, merely aesthetics as far as I know. They worked fine for us the 2 times we used them. We traded the car in and while cleaning out the garage found them, oops. 
2009-2016 Audi Q5 Roof Rack Cross Rail Bar Package 8R0071151D Genuine OEM
They may work on other models I am not sure though. It will need a KR wrench, as I have no idea where this one is, probably still in the car.