Nice knobs, made out of solid brass, I accidentally pushed them off of my desk onto a tile floor and the chrome held up fine, not a scratch on it. Two of the screws are identical, and look perfect, the other one's head is a little smaller and the slot is cut slightly towards the side, this doesn't affect its function however, it works fine, and you won't notice it unless you're looking for it. The holes for the shafts are perfectly centered, unlike the holes I've encountered in some plastic ones. Overall these are very nice, and reasonably priced.