We needed something to keep all of the tools and bits organized for our CNC. There are 10 slots for 3mm and 4mm bits, along with 20 slots for 6mm and 8mm bits. There is also 23mm cut-outs for collets and a small hole for wrenches and assorted tools. The open-source nurbs file is uploaded and editable if you want to customize this. Please post if you make this! Released through my company Northern Layers: http://northernlayers.com