1. Precise carving and polishing process, smooth and burr-free, to ensure the safety of animals 2. Cuttlefish bones, safe and non-toxic, suitable for small animals to bite 3. Suitable for a variety of small animals, such as parrots, birds, rabbits, squirrels, etc. 4. Material: Cuttlefish bone + metal 5. Features: no bleaching, no fluorescent agent, non-toxic 6. Function: protect the teeth of parrots and promote the growth of teeth 7. Length: Small size 22cm, medium size 30cm, large size 40cm 8. Weight: 65g for small size, 120g for medium size, 170g for large size