Antique wooden Cog. Used for sprocket in the 19th century, now serves as a decorative bowl or just plain utilatarian art. Elm wood from Northen China, Shanxi Area. This piece has been lacquered to preserve and show off the depth of the Elmwood patina. Great bowl for center piece or a collection. Size Overall Dimensions 11" H X 13" Dia 27.9cm H X 33.0cm Dia.