"Sizzix Bigz Pro Die - Half-Square Triangles, 6 1/2"" Finished Square" They don't get any bigger than this Bigz Pro dies, our largest dies ever, cut hundreds of materials - including cardstock, chipboard, fabric, foam, magnet, leather, metallic foil, paper and sandpaper (in limited use) - and our biggest shapes, including full-size bags, boxes, cards, envelopes and album covers