Summary

It's a frame designed to showcase your Pokémon cards.
All you need is a sleeve, and your card will be securely displayed in its frame.

Pause the print at the top layer of the magnet holes, then place them carefully. Pay close attention to the magnet polarity, especially when printing the second part.

-> Magnet 6x3 neodyme <-
https://a.aliexpress.com/_EGce30Y