Abstract: A disk for throwing or rolling is formed of a central disk shaped core attached to a top and bottom pad assembly. The core includes a slot extending inward from its periphery for the insertion of an accelerator strap. The core includes a plurality of cavities, into which may be inserted plugs of various materials. The disk will possess different characteristics depending upon the composition of the plugs, and where they are placed. Wooden plugs may be used to cause the disk to float, metal plugs may be used to increase the weight of the disk, or porous plugs may be impregnated with scent to train dogs to retrieve. The placement and number of each type of plug affects the performance of the disk.