4Pack Roof Box U-Bolt Clamps, Glazeal Roof Box Rack Clamps Car Van Mounting Fitting Kit 3.2"/82mm Inside Width with 8 Lock Nuts 2 Straps for Cargo Carrier Rack

As the title says, these seem to work well and were fairly easy to install. Good price, and pretty good build quality so far. I like the interior strap tie points that it adds if you point the forks in opposite directions during install.

Worked great for us. We had an old Thule box (model: 668 Mountaineer from 2001) mounted on a Dodge Durango originally. But we sold the car years ago and accidentally left the mounting hardware on the car. 24 years later we need to mount the box on a 2022 Subaru Outback. Bought this item. All we need to do is to drill (or enlarge) a couple of holes on the Thule to accommodate the fixed width cross bar on the Subaru. The box stayed nicely in place after an 800 mile trip.

I used this U-bolt clamp set to mount a Sears cargo carrier to my vehicle. The fasteners themselves aren’t the highest quality, but the set worked exactly as intended. I took a 14-hour trip with the carrier fully loaded, and everything stayed tight and secure the entire drive. At one point I re-tightened the fasteners slightly, but they never loosened enough to cause any issue. The carrier stayed firmly attached to the vehicle throughout the trip. Overall, good product despite the fastener quality, it performed reliably. I would buy this set again.

Cheap replacement hardware that doesn't totally fit our older Thule cargo box. Had to drill 4 holes to adjust fit but otherwise this item is as good or better than original equipment. Why? Has plastic coated U bolts and the tightening knobs don't have flanges sticking out. This is great since your gear don't get caught as easy. I would buy again since it cost 5-6 times less than OEM. I ordered the Thule Snap fit hardware at the same time for my box and these inexpensive mounts are better and easier to install. I cannot say enough good things about this hardware.

Seems like nice quality and work well to hold carrier in place of smaller square bar mounts my car topper came with.

This same set under a different color name costs 3x what this sells for. The brackets are compatible with square cross bar racks.. Like cheap eBay racks and flat elongated croos bars like Yakima and Thule... Measure the lengths between the holes to make sure these brackets will fit... These didn't fit my older Thule frontier roof box but they did fit my Yakima roof box Why did you pick this product vs others?: Completeness of kit and price

I purchased these to mount a Bunker Industries 270 awning to the crossbars of my 2024 Lifted Honda Passport, and so far they’ve been working perfectly!

I got this to have as spares for my cargo box carrier and they definitely do the job, but it had some weird plastic residue on a couple of the threading areas where you hand tighten the bolt and it made it a bit tough to screw down. To fix that I had to clean the threading a bit and then it worked better. Definitely not as good as OEM ones that come with cargo boxes, but if you ever need some spares these will definitely do temporarily.