Compatible with 3rd Edition, not 4th Edition. Order a version sized for 4th Edition here: Fourth Edition Galaxy Frame Extensions
These single-hex extenders increase the Galaxy Frame from a 3-ring layout to a 4-ring layout, allowing you to play Twilight Imperium 3rd Edition with 7-8 players.
Additional extender sets can be added to create a 5-ring galaxy, or create asymmetrically long or wide galaxies.
Each set comes with 6 extenders.