I purchased these to accommodate the hauling of camping equipment that I do not want inside the camper, such as the generator, fuel, and wood. So I have a cargo tray, normally used on the back of a truck for such goods, attached to the bumper. I also have a generator box that I can lock up the expensive and lightweight generators (you know, the ones that cost $2k - $4k) but I chose the cheaper yet much bulkier and somewhat heavier generator made by champion, and designed for RV use. This is not excessively heavy, but I can bolt it to the cargo tray that connects ot the hitch I have mounted to the bumper.So, with this setup, and with the weight being somewhat off center of the trailer, I can expect some twisting of the bumper. A few trips and bam! I can lose all my stuff! This is not overly expensive but nobody wants to lose $2k of equipment....not to mention the need to repair the bumper. So I connected these brackets to help reinforce the bumper and prevent just such a loss. To be fair, I have no clue if I would lose the bumper, it may just never happen. But, I can at least spend a few bucks to help prevent it. On the flip side, there is no promise that these would prevent such a loss either, but it surely makes it less likely.So here I am with two thick brackets, ready to install them. The install is EASY for those even partially mechanically inclined. I took a drill with a bit that is a little too small compared to what the paperwork says to use, since I am not an auto shop I just did not have everything on hand in exact measurement. The bolts are self tapping (note: They are NOT self drilling, but they make threads in a thick walled tubed steel....do not depend on that for thin walled steal) so it was a simple drill, then tighten down. Mine were a little difficult to start since the threads did not want to catch, but it worked just the same. I put 3 bolts for each brace, which is what was included. I did not use any nuts, however I couldn't since it is tube steel. However mine were thick walled, but I used three bolts instead of most people using two just to be sure.