Grim Tanks can be glued together or magnetized for modularity. Elite Geek Minis has prepackaged magnets so you don’t have to source them individually. Please choose the magnet appropriate to the kit you are going to be building.
These kits will also work with Grim Prints STL files if you want to print your own they are available here: https://bit.ly/GrimPrints
Elite Geek Minis Magnet kits ship free when ordered with models