About this 3D model

I had been planning to make a holder for my Printrbot's Ubis13 nozzles, until I realized they were M6 thread and someone had already created a holder for them. I decided to label the holes with the original 4 sizes that Printrbot sold (.2, .4, .75 and 1.0) so I could store the nozzles I have, along with any spares I might pick up. Then I noticed that Printrbot is now selling more nozzle sizes so I added more labels to a second model.