Laboratory Vial Holders rack: a practical solution

I designed these two vial holders to maximize practicality and efficiency in the lab. I currently use them, and so do some of my colleagues. These holders can accommodate various standard vials:

The larger holder can accommodate up to (one type/face at a time):

• N. 32 x 12mm vials
• N. 4 x 29mm vials
• N. 32 x 8mm vials
• N. 12 x 17mm vials

The smaller holder can accommodate up to (one type/face at a time):

• N. 2 x 29mm vials
• N. 9 x 12mm vials
• N. 12 x 11mm vials
• N. 9 x 16.5mm vials

Note: These models are easy to print and conserve filament, as they usually don't require supports. However, some post-processing may be needed to clean the holes perfectly. I recommend printing with 3 walls and avoiding rotation.
In the pictures you can see 2 custom made models; in the files you won't find any name or brand.