Delta McKenzie Hill Country & Grazing Doe 3D Archery Target Replacement Core - The Hill Country Grazing Doe Archery Target and Hill Country Whitetail Archery Target offer replacement parts to save you money. Because the core includes the universal scoring rings and vital rings, it is bound to show wear and tear over prolonged, repetitive use. The Hill Country Replacement Core is constructed of E-Z Flex Foam for steady durability and easy arrow removal during practice or competition. The scoring rings help you prepare for your next archery competition or hunting adventure.