All components are quality material and fairly easy to assemble. I found it easier to have two people working together when installing the black pipes as the "x" rib on the cross piece won't hold them in place by itself. Also - seems like the jumps should each have a screw to install in the short white upright to hold the crossbar from sliding up (and allowing the black pipes to fall out). In fact, the instructions mention "make certain the small holes are at the top and facing outward". But the instructions are silent re: using a screw in the hole to stabilize the wing. Will dig in my tool chest and find something appropriate, but shouldn't have to at this price.