Features: 1. Silent Spinner Hamster wheel designed with Dual Ball bearings, it brings your little hamster endless running happiness, also brings you a quiet night even if your hamster on the race track to run & hamster wheel is spin. 2. The hamster rolling wheel run to help them to broken boredom & enrich their night time, also keep them to exercise for maintaining their strength and well-being. 3. It is ideals for gerbil, hamster, mouse or other small animals. 4. Made of quality plastic, lightweight yet sturdy and durable, transparent texture allows for viewing pets movement. 5. The non-slip design allows your pet to not slip and get hurt while running and playing. Notice: *Actual color may be slightly different from the image due to different monitor and light effect *Please allow 1-3cm deviation due to manual measurement *Two-color running wheel styles are shipped randomly Description: Size: 11cm/ 14cm/ 18cm