This 12 piece thin metal die set, Postage Stamps, is designed by Annette Green and is part of the Everythings Blooming Collection for Elizabeth Craft Designs. These rectangles have three dies for each size stamp with a perforated edge around them and an inner and outer frame for the inside of the stamp. These dies are compatible with leading die cutting machines (sold separately). These dies can be used on cards, scrapbook pages, tags, and other paper crafting projects. The largest die measures 2.9" x 3.9".