11Hamster running wheel is crafted from high-quality, eco-friendly materials and is designed specifically for very small pets and home rodents like hamsters, mice, and others. Its sturdy, lightweight wooden construction and smooth, silent spinning motion provide good-quality installed ball bearings. Your pet is sure to get a safe and engaging exercise experience. Its versatile design can be installed directly onto a cage or placed on a -standing stand, and with five sizes and different widths available, youre sure to find the perfect fit for your pets cage or play area. Upgrade your pets exercise routine today with our small pet running wheel. Wheel dimensions: 11 diameter and 3.14 wide