The Unicage Tool Kit is designed specifically for pressing operations using a Unicage Assembly platen head. This kit provides the necessary tools to press tires up to 20 inches. Note: Unicage rings are not included in this kit and must be purchased separately based on the diameter of the Unicage being used. Included Components & Sizing: Press Stand Set (Model: PS6): A set of five press stands ranging from PS1 to PS5. Sizes: 4" x 5", 6.25" x 6.5", 8" x 10.5", 11.25" x 12.125", and 15" x 16". Base Ring Set (Model: BR6): A set of five base rings ranging from BR1 to BR5. Sizes: 8", 9", 10", 12", and 15". Start Ring Set (Model: SR6): A set of five start rings ranging from SR1 to SR5. Sizes: 8", 9", 10", 12", and 15". Press Plate Set (Model: PP13): A comprehensive set of twelve press plates ranging from PP1 to PP12. Sizes: 4.5", 5", 6.25", 6.5", 8", 10", 10.5", 11.25", 12.125", 14", 15", and 16".