These plywood boxes were designed, laser engraved, and laser cut to hold 12 total 510 or Airo Pro vaporizer cartridges.
Each row holds 4 cartridges and is labelled by an engraved letter to represent Sativa, Hybrid, or Indica to help organize.
There is also a loose piece inside by design that is not glued down. It's purpose is to prevent the bottom of the carts or batteries from sliding around.
I have also had a few batteries fit in the hole with the exception of larger ones like the AiroPro battery.
Wood grain varies.
***Cartridges are NOT included ***