My Braava plane lost a wheel profile and it was just what I needed. I googled a video on how to remove the wheels to make it easier, it's not difficult and all you need is a Phillips screwdriver. I cleaned them in the sink to remove the old glue and attached them with shoe glue. Silicone works too. Just apply a thin layer around the wheel and let it dry for about a day. Thought my robot was destroyed, glad I found them!