I purchased this in order to mount my solar panels on the back of my truck, and it is working wonderfully. It is a very study build, and was easy to install, though the wrench provided wasn't great, it does come with one. I used my own tools however and got it installed in less than a half hour. The diameter of the cross member section, is a little wider than 2 inches except in the center, so if you plan on buying u-joints, make sure you get a 2 1/2\" for clearance.