Hollow ball bat with dampening means

摘要: A hollow ball bat having a tubular body provided with handle portion, barrel portion and connecting portion. paperboard dampening element secured to the interior surface of an external in engagement surface. Such may include about 30 75 percent The tube be corrugations on its exterior have length 3.5 9 inches. has end closure closing member is closure. In preferred form, plug reduced diameter lower which extends into member.