Depending on how well these last, my rating could go up or down.  For the price of more then $115 (for 2 sets) I expected a little more.  The edges aren't finished very well.  The edges aren't perfectly even.  For instance one edge might be a 1/4" wide and the front edge might be 1/2" wide.   However, these treads are attractive and functional. You don't notice the edges very much when the treads are on the steps, it's only when you pick it up and inspect them that you notice the difference.  They do slip a little bit but not much and not when you are standing on them.