Comfort Wheel - GiantThis giant Comfort Wheel is perfectly sized for your small animal friend. Each Comfort Wheel features a safe solid running surface for quiet and tail safe operation. The open wheel design allows your pets to easily enter and exit the wheel. Comes with a heavy duty wire stand and two way attachment clip that allows it to either stand freely or be attached to wire cages. Encourages safe and healthy exercise, perfect for chinchillas, pet rats and other small animals. 12" dia.