Simon Says Stamp dies are made in the USA of 100% durable steel and are usable in nearly every machine on the market. Use wafer dies on cardstock, felt, fabric, or even shrink plastic! You can use wafer thin dies to cut, stencil, emboss and create! At their widest and tallest points: The largest die measures approximately 0.63 x 0.63 inches. The smallest die measures approximately 0.25 x 0.13 inches.