They don t get any bigger than this. Sizzix s largest dies ever, cut hundreds of materials including cardstock, chipboard, fabric, foam, magnet, leather, metallic foil, paper and sandpaper (in limited use), and Sizzix s biggest shapes including full-size bags, boxes, cards, envelopes and album covers. Measuring 12 by 12-3/4in this Pro die is designed for use only with the Big Shot Pro Machine and requires the use of a Big Shot Pro Cutting Pad, a Big Shot Pro Crease Pad and 12 by 12in paper. The assembled measurement of this die-cut shape is approximately 7-1/4 by 5-1/4in. Design: Envelope: A7. Designer: EL Smith. Imported.