Die-Versions are thin, chemically-etched dies. They are compatible with most die-cutting systmes like Sizzix, Spellbinders, Cuttlebug and Quickutz. They are designed to cut cardstock, vinyl, vellum, foam, thin chipboard, cork, metallic paper, felt and more. Made in the USA and 100% lead-free.  LOOPS CORNER 2-1/4" X 2-1/4"