This is a small box to store up to 18 Micro SD Cards.
I always lost them - as they are so small - and therefore decided to design this Box.
There is a new design for 12 Micro SD Cards, which is holding the cards with small springs. This solves the issue of too tight slots, discussed here several times. https://www.cgtrader.com/products/micro-sd-card-holder-average There is also a new version for 6 cards, which you can find here: https://www.cgtrader.com/products/micro-sd-card-holder-ball-small