The Memory Box Blue River Butterfly 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 includes two wafer-thin dies that cut out six designs in total, enabling you to create stunning butterflies with large ornate wings. The assembled butterfly measures approximately 3 x 2.4 inches, making it a prominent and eye-catching addition to your projects. With these elegantly designed butterfly dies, you can add a touch of natural beauty and sophistication to your creations.