I blue tacked all of my current 55 Primaris Space Marines into a pair of these cases. One row in the case is perfect to fit ten 32mm bases or seven 40mm bases in terms of using them for 40k. I think I'll magnetize my bases onto these one day, but with that being said, I have to say that one of the ‘clips’ on the clear top piece has a slight crack, and I am worried about its longevity. But for $30 this is a deal. I intend to buy as many more as I can afford as I build and paint minis. Just flip off the lids and your formations are ready to photograph or take out and play with, and the plastic is clear and not smoke tinted giving you a clear view of your minis on your desk.