Sprocket is made of very high grade steel and does not make chain bind or screech at all. It did not say in the description that it is a 530 pitch (company only makes 530), so I️ had to mill down and re-bevel the teeth a bit as I️ already have a 520 rear sprocket and chain. But the quality of the piece makes it well worth the extra work. Mill and lathe workmanship is so perfect that if it wasn’t on a bike it would be in a display case.