The axe seems to be a gigantic version of a regular battle axe. It has a single blade with a round base and has a wooden hilt with brown straps wrapped around it. Due to many years of fighting with it, it has become old and dull.
In the hands of a warrior such as Brogy, the axe is a powerful weapon. It can easily cut through the flesh of the dinosaurs on Little Garden. Unfortunately for Brogy, it had become fragile after years of fighting and could not withstand the assault on the island eater.
Hakoku (覇国,Hakoku?, literally meaning "Warrior Nation"): Putting all of their strength into it, Dorry and Brogy each call upon Elbaf's "warrior code", and slash their weapons at the ocean, creating two compressed air beams (Dorry's is blue, while Brogy's is red) that will slice through anything in their path, even the ocean itself. However, the amount of power needed for this attack proved to be too much for the giants' rusty weapons, so both Dorry's sword and this axe shattered. The only thing they are incapable of piercing is the "bloodstained snake" (血に染まるヘビ,chi ni somaru hebi?). In the Viz Manga, this is called Hakoku Sovereignty.