The Big Mouth Slider Die Set is an optional die created to pair with the Big Mouth Nutcracker Die Set, for a fun interactive twist. This die set allows you to create a clever sliding mechanism that enables the nutcrackers mouth to open and closeadding an element of surprise and delight to your holiday cards and projects. Designed to fit A2-sized cards , the die pieces make it easy to build a smooth, functioning slider that works seamlessly with the nutcrackers jaw. Ideal for interactive greetings, gift card holders, or any card that calls for a little extra magic