This is a base system to mount 60mm plastic trees to play battletech or other 1,25mm hex based games. You will need : Cheap plastic trees (got mine on Wish) 2mm x 4mm round magnets Paint Flock (optionnal) Have fun with these. Note : if you use the plain Hex bases for your Mechs, they will drop right into the forest and the magnet on the bottom will make it easy to keep your mechs in metal cookie boxes.