Description: Made from natural wood material , safe and environmentally friendly and durable. Chewable, Rodents' instinctual need to chew, good for trimming teeth. Flexible bendable bridge most cages, quick link fastener for easy attachment using in the cage by vertically. Provides pet mountaineering and exploration of desire and balance skills when walk,, let them exercise to keep healthy. Suitable for hamster, mice, gerbil, rat, sugar glider and similar-sized small pets, provide them a distinctive fun time. Specification: Material: Wood Size Chart: Size: 7.5x40cm/2.95x15.75inch 7.5x50cm/2.95x19.69inch Package Includes: Bridge Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!