Summary If you're a martial artist you might get tired of your old belts having no use. This is a modular display case so if you do a martial art with a different amount of belts you don't have to find a different structure Post-Printing the connectors stl is essential if you are stacking because it holds the parts together. The connecters stl prints 4x 7.9 by 7.9 connectors. The other parts are as labeled. The top is the top, the middle is the middle and the bottom is the bottom.