A friend gave me a set of these and I was excited to put them on and put them to use! I put them on and lined them up on my crossbars. I used them once on a slightly windy day with some recreation kayaks. The wind caught the kayaks and both bottom pieces that attach to the crossbars shattered and in-turn also broke my crossbars. I have now gone back to my swimming pool noodle and ratchet strap method. I was really hoping that these racks would be an upgrade- not so much.