Classic kayak cradles. One set is the original, and one set is the newer shape. Well well used, but still have some life. The newer ones have been modified to remove the “ramp” shape, which was just in the way. They fit on round or square crossbars, maybe aero bars. First $25 takes both sets.

https://maloneautoracks.com/AutoLoader.html

Located in Hood River, close to Walmart.