X-Blocks Belly Button 6.5" template is a rotary cutting tool for making your own unique quilt blocks and borders. It can be used alone or with the 6 1/2" X-Blocks tool. You can create many different and exciting new quilt designs with just this one tool. Transform your ordinary strips or easy to piece blocks into X-Blocks in seconds. Eliminate fabric waste by creating dynamic borders as you make your blocks by mixing and matching prints from the extra fabric left over after cutting your blocks.