These are only 1/2 inch thick and much smaller than our forms. These are designed to make nested sets out of our 4pc RIM templates. These push plates were designed to fit any of the 4pc RIM template set. These push plates will make the 4pc 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 4 push plates sized appropriately for the 4pc RIM templates.