Die-Versions are thin, chemically-etched metal dies, used to cut out letters and shapes from a variety of materials. These dies are compatible with most personal-use die-cutting systems on the market. They're proven to work great in the Big Shot, Big Shot Pro, BigKick, Vagabond, Wizard, Grand Calibur and Cuttlebug. In some machines, adapters or shims will be needed. Please consult your user's manual that came with your tool for additional information.