You need 8 Magnets with Dia 4x3mm for the Cap, ensure you place it in the right direction.
For the Cap you need to do a quick color change over the first 0.6mm
You can use all straight glass stems from 70mm up to 110mm including the dosing cap and also the 70mm stems with the black plastic mouthpiece.
You can find the old Version of this Case here:
https://www.printables.com/model/268119-arizer-air-max-case/files
The author remixed this model.