This You've Been On My Mind clear acrylic stamp and die set is from Gemini and Crafter's Companion. This set includes 11 pieces, there are nine stamps and two dies. The dies cut out the outside of the window and the inside of the window, creating a tri-fold aperture. These dies are compatible with leading die cutting machines (sold separately). The nine clear acrylic stamps feature three butterflies, two sprigs of foliage, and four sentiments. These stamps adhere to acrylic blocks and can be used with your favorite inks, markers, embossing powders, watercolors, and other crafting mediums (sold separately). These stamps and dies can be used to make cards, scrapbook pages, tags, journal and planner pages, and other paper crafting projects. The largest die measures 2.4" x 2.4".