I was going to mention a Kuat NV 2.0, it uses a pin for security and has a ball for anti-rattle. Once installed, it’s a breeze to use and fits all different size bikes. However it is a beast to install and store when in 4 bike mode, and it bottoms out on the slightest grade when mounted on my Honda Odyssey. I wish it had a stepped design like the 1UP.