I just received this roof rack set(lightning fast shipment and secure packaging from Amazon) and I am not pleased with it. Specifically;* The supports are plastic, they should mention this in the description, I assumed that the bar supports would be metal.* The gripping feet that come in contact with the car roof are smooth and slippery so even when the straps are as tight as I can pull them and the assembly will not move side to side, they still slip on the roof front to back.* The lip holding the foot onto the plastic support is also rather flimsy.''All in all it's cheap made in China crap, you definitely get what you pay for. I am going to try to find some rubber gripping material to use under the feet to stop them from sliding around.