Use these Smoothfoam painted planets to create your very own solar system diagram! Each package contains 9 planets and a sun ranging in size from 1 inch to 4.5 inches. Construct the diagram with 12 inch wooden connecting rods, the 3 inch Smoothfoam base and an eyelet screw for hanging. Don't forget about adding Saturn's rings! Directions to construct the diagram and fun facts are printed on the box.