These are only 1/2 inch thick and much smaller than our forms. These are designed to make nested sets out of our 3 pc RIM templates. These push plates were designed to fit any of the 3 pc RIM template set. These push plates will make the 3 pc RIM templates into a beautiful nested set. My push plates have a beveled edge so they won’t create unwanted lines. Each set comes with 3 push plates sized appropriately for the 3 pc RIM templates.