These are terrible, cheap and flimsy. The knobs are plastic and when I was putting them up I bent one of the hanging brackets. The reason I am not returning is because I refuse to pay for shipping. I have put them up and hate them. At a distance they look fine but definitely will not last long. With only 2 panels on a 120 rod, it was bowing in the middle, I had to use another small curtain rod to reinforce it inside. Please don’t waste your money!