Description: Made of high quality material for your . Helps your hamster exercise more and develop agility. Widened and thickened base provides reliable and stable mount for the exercise wheel. It not only serves as exercise toy preferred for small pet sports activities but also a nice decoration. The wheel is silent when with this wheel it will not disturb you. Specification: Material: Size(DiameterxHeight): 18x12cm/7.09x4.72inch Color: White//Blue Package Includes: 1 Piece Hamster Exercise Wheel 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 shopping!