The Memory Box Silver Moon Butterflies Dies are made from durable steel and compatible with most die-cutting machines on the market. You can use these dies on various materials, including cardstock, felt, fabric, or shrink plastic. They offer the flexibility to cut, stencil, emboss, and unleash creativity. This set comprises two wafer-thin dies that intricately cut out eight designs. With these dies, you can create both large and small butterflies, each featuring exquisite details on their wings and bodies. The assembled butterflies measure approximately 2.3 x 1.5 inches and 1.4 x 0.9 inches, respectively, providing a range of sizes suitable for diverse crafting projects.