M3 Bolt Rack

I made a rack for holding my M3 bolts (screws) when working on a project.  I find it holds enough for me to use while working a project.  It also helps me organize the bolts as if I try to put a bolt in a smaller slot, it rocks back and forth, so I know it is the wrong size. 

I uploaded as m3f so if you have an MMU, you can make the letters a different color.