Just what you need on a construction site. 긁힘 방지 및 롤링 이것만으로는 디스커버러 STT PRO를 구입해야 하는 이유가 될 수 없습니다. But if you have alloy wheels on your truck or SUV and drive through construction sites with rocks and boulders, you know its easy to damage your pretty wheels.