Cuttlebone is essential for all birds and promotes good health by keeping beaks and nails trimmed Cuttlebones measure approx. 5" long (max) Cuttlebones are a natural product, and bones will range in color and size 25-piece box Prevue Pet Products 5" Long Bulk Cuttlebone 1148M is essential for birds of all sizes because it helps keep beaks trimmed. Comes in bulk packaging, twenty five pieces per carton. Since cuttlebone is a natural product, items may vary in color and size.