You can order extra inserts for our Micro SD / USB swiss army knife Kit. The micro sd card holder will fit 6 cards. The regular sd card holder will accept 2 cards. It will also hold micro sd to sd adapter cards.
The tray’s internal size is: 69mm long x 25mm tall x 15mm wide
We’re just as humble as we are innovative. This design was actually created by a fellow maker and we respect a good design when we see one. You can find his design on thingiverse. https://www.thingiverse.com/thing:633436