Thank you for viewing. This is a Glass Harmony 600 cage and 21cm wheel set. It has been used for a total of about 3 years, so both the cage and wheel show signs of use, but there is no looseness in the opening/closing mechanism and no urine stains. There is a crack in the corner that occurred when cleaning. I used tape to cover it, but it didn't affect the opening/closing if the tape was securely applied. The corners on the back side also have scratches from other animals chewing on them. Please take a good look at the images and understand that this is a used item before purchasing. A transparent glass small animal cage with a lock function for high safety. - Model Name: Glass Harmony 600 Plais / Multi 600 - Material: Glass - Size: 600mm - Features: Highly visible with a transparent design - Lock Function: Front lock included - Application: Small animal cage Thank you for viewing.