The Poppy Stamps Arched Gothic Cathedral Window Dies are crafting dies made from durable steel. It is designed to integrate with nearly all die-cutting machines. These dies work with a wide array of materials, including cardstock, felt, fabric, and even shrink plastic. With this die, you can easily cut, stencil, emboss, and craft a diverse range of projects. This set includes two dies that are designed to create a magnificent cathedral window. These dies have been detabbed and thoughtfully mounted on a magnetic sheet for your convenience. When the cathedral window is assembled, the approximate dimensions are (2) 3.1 x 4.7 inches.