I bought both the largest size and the 2nd largest size.  The 2nd largest size had a dent but I was able to just turn the rod and have the dent facing the wall.  The larger rod came with 4 brackets but I only used 3 and it does not bend in the middle with the bracket.  I did not want to use all 4 because I wanted the drapes to move to the ends but close all the way.  They are metal and pretty sturdy for the price.Pros: easy to install, I was able to do alone.