Barkworthies BARK-ELKANTMED12 Elk Antlers - Medium 12 Bulk Bag Barkworthies Medium Elk Antlers are highly durable and will last hours or days for any aggressive chewer&#44; Each antler is filled with soft marrow and contains essential nutrients such as zinc&#44; calcium&#44; Their tough&#44; textured surface helps remove tartar and plaque while massaging the gums. As with all of our products&#44; Barkworthies Medium Elk Antlers are additive&#44; chemical and preservative-free. Moreover&#44; most Barkworthies products are single-ingredient chews&#44; which means they&rsquo;re 100&#37;