Rubber mallet

A rubber mallet comprising:

• a handle;
• and
• a striking head including an outer body and an inner body disposed within the outer body, wherein the outer body defines a receiving space receiving the inner body, wherein the outer body and the inner body each have a polygonal shape with a plurality of sides and are made of different materials, wherein the receiving space has a plurality sides corresponding to and surrounding the plurality sides of the inner body wherein the outer body defines a hole, and wherein the handle has a first end inserted through the hole of the outer body and fixed to the inner body and a second end protruding outside of the outer body and disposed outside of the hole;
• wherein the inner body defines a first positioning space and a second positioning space in communication with the first positioning space, wherein an opening of the first positioning space extends through one side of the inner body, and wherein the first end of the handle fixed to the inner body is inserted in the second positioning space,
• wherein the outer body includes at least one first coupling structure and the inner body includes at least one second coupling structure mutually engaging with the at least one first coupling structure,
• wherein one of the at least one first and second coupling structures is a protrusion and the other of the at least one first and second coupling structures is a recess, and
• wherein the at least one first coupling structure is located in the receiving space and includes a first section and a second section extending radially out from the first section, wherein the at least one second coupling structure includes a third section and a fourth section respectively engaging with the first section and the second section of the at least one first coupling structure and includes the fourth section extending radially from the third section, wherein the at least one first coupling structure has a first width and a second width greater than the first width, and wherein the first and second widths are respectively defined at the first and second sections of the at least one first coupling structure.