This is a case of Wacom Intuos pro pen 2. I don't know if other version stylus fits this case.
I printed this with PETG, and the result of 'pencase3base' is bended. So, the lid (I named 'pencase3cover') doesen't fit it. That is why, I made 'adjpencase3cover'. 'adjpencase3cover' is tight, so you have to adjust it by sanding with abrasive paper.
I recommend that you print 'adjpencase3cover' and 'pencase3base' and adjust.