This is a display shelf that is fully stackable.  It can fit up to 4 pokeballs, or when stacked it can handle as many as you wish.  This is sized to fit well with N3D's amazing pokeballs, so approximately 70mm.

Please note that the pokeballs shown in the image are not my work, they are the wonderful work of N3D.  If you wish to print their pokeballs, check out their profile:

[https://makerworld.com/en/@N3DMEL](https://makerworld.com/en/@N3DMEL)