Yes, these are mostly just flat bases, so what gives?

I needed some non-standard OpenLock sizes for some wilderness tiles I was developing These are based on the OpenLock 6 x 6 inch, U (4x4), and EA (3x3) tiles.

These a 7mm high flat bases, so one can glue foam board or other stuff on top and get a 10 to 12 mm height to match other tile types like Dwarven Forge or home built dungeon tiles.

Aside from the bases, I also had a need for a 3 inch riser that can hold them from below (for hills or other raised terrain). I will probably add a 1 and 2 inch riser in the near future.

That's it. Nothing too fancy.