I use these for my kayak racks. I have a 2018 Hyundai Tucson. The instructions were hilarious. You can’t understand them at all. I figured how to install them on my own though. It was super easy to figure out. All you do is unscrew all the screws, adjust the length to where you need them, then screw back in the screws and tighten. They held two kayaks and are super sturdy. They don’t budge!!