The Drax (known as the Hamdrax before v1.2) is a tool which is crafted from Hallowed Bars and one each of the souls dropped by the mechanical bosses. Like all drills, it cannot be reforged with any prefix that increases size. It is a great tool for mining and cutting down trees. It is the second best combination of a Pickaxe and an Axe, only being surpassed by the Picksaw and Laser Drill, which has 210% Pickaxe power and 125% Axe power and a faster use time. It is also the fourth best pickaxe by pickaxe power in the game, second only to the picksaw, luminite pickaxes, and laser drill.
Much like the Hamaxe, the Drax's name is a portmanteau of the tools whose purposes it serves: Drill and Axe. "Dr" as in Drill, "Ax" as in Axe.
Before 1.2, the Drax was called Hamdrax, a portmanteau of hammer, drill and axe. The hammer part was removed due to half slabs coming out.