The two identical trays; "6/12 Man Skirmish Movement Trays B" have been designed to be suitable for rules such as Sharp Practice and Saga or for moving hordes. Zulus and Zombies come to mind. 

Made from 2mm MDF, each tray comes in two pieces (which need to be glued together with woodwork quality PVA) and has the 6 circular bases included.

The diameter of the hole is 25.4mm. This allows a comfortable fit of a 25mm diameter base that has been painted. All 25mm bases are included in the pack.

The two trays have been designed to work as an individual tray holding 6 models or "link" them together to form a 12 man unit in a variety of configurations.

Please also see "6/12 man Skirmish Movement Trays A & C" for alternative patterns. All trays are designed to "link" together giving a range of deployment options.

The last picture shows "Twin Trays B & C" together.