ZQULOYO 4 PCS Universal Stainless Steel Roof Box U-Bolt Clamps Rooftop Cargo Carrier Rack Bolts Car Van mounting Accessories U-Bracket Clips with 8 Lock Nuts 2 Strap Kit for Most Cars

Probably tested them more than I should have keeping up with traffic... but held up just fine.

Very strong. Worth every penny.

These worked so well, I wish we had gotten them years ago. No sliding of our box in high winds, even with a tornado warning. Easy installation too. We have a Thule box that we have used for well over a decade, and these are the best attachments we've found. Reasonably priced, too!

They were a little too small for my THULE Adventurer box, but I was able to just drill new holes and they worked perfectly, even with drilling new holes it took all of ten minutes to install on our 2018 VW Atlas.

Arrived very quickly. It's packaged semi haphazardly in a very small box. I have a set of no name brand roof rails and because of their shape was worried about the ability of these to work. But they fit well enough to be able to tighten everything down. The original roof box hardware didn't work with these rails which is what sparked the initial search. There's several to choose from but frankly they all look the same and this seemed to be a good value in comparison.