Offered are 8 brass, round door knob back plates. They are made from bright, shiny brass--brand new in wrappers--never used. (One removed from wrapping for photos). They are polished brass, and measure approx. 3" in diameter, hole is approx. 7/16" in diameter. They are very heavy, would be a stylish addition to any door.  Each comes with matching mounting screws. I will be glad to answer questions.