This 11 piece thin metal die set, Nested Rectangles is from Crafter's Companion. This die set features 11 rectangle nesting dies that can be used separately or together. These dies are compatible with leading die cutting machines (sold separately). These dies can be used for cards, shaker cards, frames, windows, panels, scrapbook pages, tags, journals, and other paper crafting projects. The largest die measures 5.1" x 4.2".