Dear customer, Thank you for choosing our products. If there is any problem with our products, please contact us through the order information. We will be happy to serve you and solve it for you as soon as possible within 12 hours, thank you! The flying saucer hamster wheel adopts steel shaft bearings, which runs smoothly and smoothly,durable in use,is safe to use, and unlike traditional running wheels, there is no noisy squeaking sound during operation. which is perfect for dwarf hamster movement and allows the hamster to run without arching its back. This running wheel is only suitable for small hamster. Solid Running Surface, and the surface of the hamster wheel disc is not hollowed out, Completely Safe for Your Pets Tail and Feet, there is no need to worry about the hamsters being injured during sports play. Our hamster wheel has more than the advantage of silence. The inclined design of the flying saucer running wheel can better let the hamster run up and down, with higher safety. There is no need to worry about the excreta of the hamster stuck on the dial. The hamster wheel can be directly removed and cleaned with water, which is very convenient. Hamster flying saucer is suitable for dwarf hamsters, robo hamsters and other small hamsters that weigh no more than 500 grams.The lines on the surface of the flying saucer hamster wheel can well Keeping hamster healthy and active.The exercise wheel can greatly arouse your pets interest to do exercise and keep them health.