These are great! They keep the plant tubes from sliding to the center from their weight when you move the cage I have a round hamper style cage that I put a plant tray in.
These are the best. I use a mix of large and the slightly smaller tubes.
Great cage! I just ordered 2 more!
Works very well!! I would buy again, if needed.
Make the cage much easier to clean, as well as stabilizing the cage for moving. The caterpillars are still able to get under the sides, but cleaning is much easier now!