4x4 Base Holders
These 4" x 4" bases hold 4 mm to 5 mm square magnets or 4 mm ball magnets in there 1" center holes as well as being compatible with openlock, dragonlock and infinitylock systems using Dungeonworks clips found here https://www.thingiverse.com/DungeonWorks/designs.
and you can find our tiles for these bases at https://www.twistedwizards.net/digital-3d-terrain-stl