28mm. Presupported and unsupported.
Includes:
Immortal warrior pike, Immortal warrior swords, Immortal warrior cavalry, Dragon guard pikes, Dragon guard swords, Dragon guard cavalry, Dragon Champion, Immortal Archers, Prince of blades, Battle priest, Lord commander and Immortal King.
NOTE: highly highly recommend sourcing 1.19mm rods for the pikes. They come with printable pikes but I cannot guarantee they won't break if you look at them the wrong way. K&S precision metals has 1.19mm brass rods that work perfectly with this set.