While the plastic bossing mallet by Armatool only weighs two kilograms, it is very sturdy and guaranteed to last for ages. This is the ideal product to use if you need to flatten out metal for a project. The plastic head is reinforced and heat mouldable which means it will keep its shape over time and withstand even the toughest use on materials such as lead cladding and other sturdy metal. Head size (50mm)