Nice product. Well made. Looks great in my kitchen. There is a little tiny nub that I didn't realize was there so when you are screwing them in, make sure you twist with the screw driver from the inside otherwise you will mark up the outside of the cabinet by twisting with the nob. Took me a few to realize that was happening. Also, the screws are not long enough for my cabinet drawers. I had to use the existing screws from my old knobs. Be prepared for that too. As an after thought, I would stick with round as the chances of over 50 square knobs staying level is never going to happen. It may make an OCD person anxious.