I'm not disappointed about the bars they own, but I would put a reservation on the quality of the key 6 sides. Fortunately for me I had at my disposal an Allen key at its end with a ball that allowed me to lock the bars on clean aluminum longitudinal bars to the vehicle. Because with that provides, I am not come tighten the clamps (inability to put the key in the screw heads). If the safety lock is operated on one side of the shutter bar by the passage of the Allen key to the clamping screw.
