Thank you for viewing. This is a quiet wheel that uses a bearing system. All accessories are included. The joint of the wheel body has slightly discolored after several months of use. There are also some scratches. Please purchase only if you understand that this is a used item. It is also compatible with wire mesh cages. The original box will be used for shipping, but the condition of the box is not good, so please be aware of that as well. - Model Name: Silent Wheel 17 - Size: 17cm - Color: Clear - Features: Quiet design, lightweight, stability - Application: Small animal toy - Condition: Cleaned