Abstract: A propeller shaft has a dynamic damper composed of a cylindrical mass member and an elastic body surrounding the mass member. The elastic body has an outside diameter larger than the inside diameter of a tubular body, and is held therein by compression and elastic deformation. The elastic body has a number of radially outwardly extending protrusions and its compression is such that a frictional resistance produced between its protrusions and the inner surface of the tubular body may be larger than a force causing the withdrawal of the damper from the tubular body. The damper can, thus, be placed in position without relying upon any adhesive, or special holding member, or any special bonding job.