This is a running wheel for small animals. It is a used item. The wheel has a diameter of approximately 25 centimeters. It has been cleaned, but there are signs of chewing, wear, and rust. Please check the images. The silent specification works without issue, and it spins very quietly. Shipping will be via anonymous delivery. We may change between Rakuraku Mercari Delivery and Yu-Yu Mercari Delivery without notice.