These bases are useful for any game that does not require individually based figures but instead works with regimental or unit bases. Just a few of that games these are useful for are Kings of War, Hail Caesar, Pike & Shot, Black Powder, and there are many more.
These sizes are meant for larger infantry that would be on 25mm bases.
These bases have are 3mm thick and have a small notch in the leading edge to help visualize the center of the base regardless of the placement of the models on the base. This is important for several games that use regimental bases.
These bases are sold individually.
All dimensions are Width then Depth.