I used one level and the rubber base for two months. The remaining two levels are unused and have not been taken out of the bag. There are some chips and scratches on the plastic parts. Please see the images. Thank you. The washing machine anti-vibration platform is removable, and you can freely combine the three heights of 4cm, 7.3cm, and 10.5cm. By raising the washing machine 10.5cm, you can secure space for the drain hose at the bottom, and at the same time, ventilation at the bottom is greatly improved, preventing rust and moisture. You can raise up appliances and furniture, making it easier to mop and clean with a robot vacuum cleaner, preventing dust from accumulating under furniture, and making cleaning easier.