This four piece Framelits die set, Circles, is from Sizzix. These Framelits dies are chemically etched dies designed to cut a single sheet of cardstock, paper, foil, or vellum. These dies are compatible with leading die cutting machines (sold separately) and can be used on cards, shaker cards, scrapbook pages, tags, journals, planners, and other paper crafting and mixed media projects, and are also great for layering. These dies measure 1.25", 2", 2.5", and 3.5" in diameter.