From the publisher's website:
This Azul Factory Layout Organizer lets you quickly set up the game and be ready to play in seconds, and keeps tiles in their place on the game table!
This item comes with nine circular frames to hold the cardboard factory discs. These frames are then easily connected to one of three center area rings, each providing the needed number of factories (5, 7 or 9) depending on the number of players (2, 3 or 4).
Each factory frame provides a small rim that helps keep the tiles on each factory, but if you're playing in a particularly chaotic area and need maximum protection from bumps, then you can simply remove the cardboard factory disc and use each frame on its own.
The product includes:
9 circular frames for the cardboard factory discs
1 2-player center ring
1 3-player center ring
1 4-player center ring