This 30cm wheel features a quiet design, perfect for small animals to exercise. - Type: Wheel - Brand: SANKO - Size: 30cm - Material: Plastic - Color: Cream - Features: Quiet design Thank you for looking. *Used only once for a trial run. I am selling it because it was a little too big for my pet. *It has been used once, so it is a used item, please consider this before purchasing. Thank you. The last image may be helpful for size reference! Recommended for those who keep sugar gliders, degus, chinchillas, hedgehogs, prairie dogs, etc.