Mauls and mallets are used for striking tools. I use two different weights of mauls, a light 16oz maul for tooling and attaching light hardware, and a big 72oz maul for heavy pounding like 3-D stamps and copper rivets. I prefer a maul called the "Maul Master" because of its extraordinary weight and balance, comfortable handgrip and durable head. There are other kinds of mauls and mallets: rawhide mauls and mallets, wooden mallets, rubber mallets, and "poly" head mauls and mallets.
I prefer the "poly" head mallets because they feel good when used, and they do not leave wood particles on the project like wooden mallets, nor do they require any maintenance like rawhide mallets which need to have the frayed edges cut off after considerable useage.