Description: Brand new and high quality. Running wheel wide comparatively light Hamster run up relaxed . Suitable for hamsters gerbils and other furry friends. High quality running surface is safe and comfortable for your furry feet. Can be used free standing or attached to cage. Specification: Material: Height: 14cm Runner diameter: 12.5cm Thickness: 6.5cm Package Includes: 1 Piece Hamster Exercise Toy (Stand color random) Note: Please allow 1-3cm error due to manual measurement and make sure you mind before ordering. Please understand that colors may exist chromatic aberration as the different placement of pictures.