2 piece die set intended for slimline papercrafting basics. Cut panels & layers to fit perfectly to a slimline card with a beautiful stitched scallop edge. Each die includes an outer scallop edge, but also includes an inverted scallop inner die. Our Essentials Slim Cuts are a set of basic dies to help you create gorgeous slimline cards. For reference, size #9 envelopes are for slimline cards and measure 3 7/8 x 8 7/8. We have based our die sizes on cards that will fit within the parameters of this envelope size. Approximate Measurement: Outer Rectangle: 3 5/8 x 8 5/8 inches Inner Rectangle: 2 x 7 inches