This set consists of two HDF movement trays for infantry on 30x30 mm square bases, 12 models (two ranks of six).
Manufacturer: Tabletop Scenics
Each movement tray consists of a base (HDF 1.5 mm thick) and a frame (HDF 3 mm thick).
The parts have to be glued together before use.
HDF bases are the most inexpensive way to quickly set your numerous models on their feet (or re-base if that rules update hit you out of nowhere). Precise laser cut ensures that the base will always keep the correct size.