Overpriced for nothing except the rubber strip the same you can get at the hardware store much cheaper and not even soft so the vacuum is difficult to turn because it touches the baseboard when turning and because it's rubber it prevents the robot from spinning from time to time and you'll know it's happening, you'll hear it, order two of these as I have two new roborock s5s so come along back it's just a waste of time Take them off and try to pack those sick rubber pieces to save money. It's nothing but a short strip of rubber that you can get cheaper at your local hardware store. Look for something softer for the robot to touch the wall, it can still turn over