Penn Plax X's 6 Penn Plax Bird Aid 11" Gravel Roll Round Cage Clear Box 7 Sheets Each Roll

6 total boxes, each box has 7 round sheets. 11 inches is the round diameter size. Each tray liner is made from flexible vinyl. The pennplax gravel roll is 11-inch and it’s a fast and easy way to clean your bird cage; The gravel roll also helps keep your birds claws and beak trim and healthy; The pennplax gravel roll also provides grit to aid in digestion