A gravity hammer is a specific kind of hammer that the Armorer utilized for the creation of Mandalorian armor. Circa 9 ABY, inside her workshop at the Mandalorian covert located on the Outer Rim planet Nevarro, the Armorer employed it to fashion Din Djarin's armor. Subsequently, within the covert situated on Glavis Ringworld, she repurposed it to reshape a beskar spear into Grogu's chainmail shirt. Furthermore, she engaged in practice combat with Din Djarin using the gravity hammer during his training with the Darksaber, as the tool possessed the capability to deflect blows from the lightsaber.