Hammer, 1000g

Heat treatment is a process in which metal is heated and then cooled to change its physical properties. This can improve the hardness, toughness and ductility of the metal. In the case of a 1000g hammer, this means that the hammer is strong enough to withstand heavy blows without deforming or breaking. It is also likely that the hammer will have a longer life, as the heat treatment also helps to reduce corrosion and wear.