New Brass Key Hole Grommets 1 dozen pieces Used on 8 day and 30 hour key wound movements. This is new replacement reproduction parts for pendulum mantle,shelf clocks. Can be Used on many models. Real Brass Quality ! (12.5 mm) 1/2 inch outside 3/8 (9.5 mm) inside diameter 3/16 depth/thickness (made for thicker face materials)...