Desk Cup Holder (a little too fancy)

"Simple" cup holder that you mount to underside of your desk using two screws.

Did a quick stress test and it holded 5kg of milk no problem (as in picture).
I suppose it will be used to max around 2kg of load.

Dimensions shown on pictures.

There are 4 sizes with different diameters ranging from 75 to 90 mm.
They are labeled with "Dxx" in the 3mf file name.

I printed the 85 mm one using PETG and 0.3 mm layer height