8-piece set of 13 inch circular plant ball cages with 4 wheels, heavy-duty rolled plant racks 904069141. Eight Piece Set This product comes as an 8 piece set of 11. 42 inch circular plant racks, providing you with multiple options for displaying your plants. 2. Lockable Wheels Equipped with 4 lockable wheels, these plant racks are easy to move around and can be locked in place for stability. 3. Heavy Duty and Large Capacity The heavy duty rolled plant rack has a large capacity, able to hold multiple flowerpots of various sizes. It is built to last. 4.