Description: Materials: Plastic Sizes: 12cm/4.72inch 14cm/5.51inch 17.5cm/6.89inch Color: Pink Feature: 1. Silent design: The hamster exercise wheel is specially designed to be silent and odorless, so it will not disturb you or your pet's rest. 2. Safe material: Made of high-quality plastic material, not easy to deform, ensuring the safety of pets. 3. Comfortable design: In line with the ergonomics of hamster bodies, it does not harm the pet's paws, allowing pets to exercise more comfortably. 4. Large size design: Large diameter design to meet the exercise needs of hamsters of all sizes and other small pets. 5. Easy to install and clean: Simple assembly, easy to disassemble and clean, providing you and your pet with a convenient and enjoyable user experience. Note: 1. Manual measurement may have an error of 1-2cm. Please understand, thank you. 2. Due to the difference between different monitors, the image may not reflect the actual color of the item. Package includes: 1* Silent hamster exercise wheel