This tool helps you add the perfect detail to your fondant.
With this tool you can create straight symmetrical designs; for example, if you are making a ribbon on your cake this can add perfect detail to the ribbon.
Sorry for the poor quality of this picture but I'm a baker/law student not a photographer :P. This is a fuzzy example of what this tool can do, notice how the edges of the ribbon have a design on them.
This tool has two types of pieces: the ones that create the designs, and the spacers. The spacers are marked and come into a variety of sizes so you can make sure your design is perfectly even and the exact size that you need.