100% Natural Antler - X-Large; These antlers are natural sheds from elk. After the elk shed them, they are gathered, cleaned and cut to the appropriate sizes. These antlers are rich in Calcium, Phosphorus and other minerals like Iron and Zinc. Great for dental health. We use our thickest elk antlers for these long lasting antler chews. The length will vary so if you prefer them to be longer or shorter, please let us know in the "comments" section during check out.