Silent Wheel 25 with a quiet design, 25cm in diameter, perfect for small animals. - Model Name: Silent Wheel 25 - Features: Quiet design, ideal for small animals such as degus, chipmunks, and hedgehogs - Size: 25cm in diameter - Purchase Price: Approximately 4000 yen Thank you for viewing. I purchased this when I first started keeping degus. I installed it once, but the degu I started with wasn't fond of this type of wheel, so I removed it without using it. Therefore, although the box has some scratches, the main body appears to be unused. I unearthed this during a thorough cleaning, as it had been stored away unused. I'd like to offer it to someone who loves small animals, so I'm putting it up for sale. Thank you for your consideration.