The Concrete Prep Plus is the answer for coating removal on porous, rough concrete surfaces where you can’t use an EZ Scrape. The aggressive metal backed diamonds attack cured coatings on rough surfaces. It can even be used on standard buffers without fear of breaking the drive pin. Grinds faster and lasts longer than standard tool. The 25 grit Concrete Prep Plus leaves a 25 grit profile on concrete which is sufficient for application of most epoxy and painted coatings. Hearing protection is required when using this attachment.