1. Precise carving and polishing process, smooth and burr-free, to ensure the safety of animals 2. Natural wood, safe and non-toxic, suitable for climbing of small animals 3. Suitable for a variety of small animals, such as parrots, birds, rabbits, squirrels, etc. 4. Material: wood 5. Features: easy to install, safe and environmentally friendly, non-toxic 6. Specification: 7-piece set 7. Weight: 330g (one set)