5mm hex screwdriver bit holder

This is my first thing I have designed using autocad. It's a very simple 5mm screwdriver bit holder, as I was fed up with all my screwdriver bits being all over the place. The tolerances are a little tight, and I printed at 103% to get the bits to fit nicely. I have also included a small test part, that takes about 5 mins to print, so you can check, before you print the whole thing. I have included all the autocad files, so you can tinker with it as you please.
I printed it at 0.2mm with pla.