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★Link to purchase silicone spray shown in the video ▶https://m.site.naver.com/1tDoW There are dozens of parts finished with rubber on the underbody of a car. Over time, rubber naturally hardens and becomes hard, causing it to break down. If you manage it with silicone spray, you can more than double the time it takes for it to break down. Especially, prevent and save on expensive underbody repair costs with just a few thousand won! ※The only solution for parts that are already damaged is to replace them.