High Quality: The hamster wheel is made of high-quality plastic, strong, lightweight, durable, non-toxic, bite-resistant, wear-resistant, and built for long-term use. Easy Install: Can be easily mounted on the side of the cage or placed inside using a bracket. The bearing aligns with the square mark at the red indicator; simply tighten the nut and hang it on the cage. Unique Design: Features a seamless three-point buckle design for enhanced stability and security. Interior side pedals increase traction. The thickened wheel wall helps balance speed during use. Quiet Rotation: Designed for smooth, quiet operation. Encourages pets to exercise for extended periods without disturbing household members, ideal for nighttime activity. Widely Used: Suitable for small and medium-sized animals. Ideal for chinchillas, pet rats, and other small animals, providing a safe and engaging environment for exercise and play. Product Material: Plastic Product Size: 12 cm running wheel Package List: 1 x Hamster Exercise Wheel