Sizzix Framelits are chemically-etched and wafer-thin, so they cut cleanly through vellum, paper, cardstock or metallic foil. With the Scallop Hearts 2 Framelits set, you can cut precise hearts in four sizes which can then be used separately or layered for a dimensional effect. Framelits can be used to cut windows in cards, layouts, bags, or boxes, and also work well for cropping photos. The four dies in this Framelits set are designed to be used with the BIGkick, Vagabond, and Big Shot machines along with Cutting Pads and Platform (all items sold separately). The cut shapes measure 1 1/4" x 1 1/2", 2 1/4" x 2 1/2", 3 1/8" x 3 3/4" and 4 1/8" x 4 3/4".