Diamond-coated floor pads are made for cleaning and polishing marble, terrazzo, slate and polished concrete flooring. Simplified, one-step process simultaneously cleans and polishes stone floors. They help eliminate the need to use floor finishes, coatings, stripper and crystallization products and the labor-intensive work associated with applying these chemical products. The Scotch-Brite Purple Diamond Floor Pad Plus conditions floors to bring out a medium gloss to enhance floor appearance. 20" pads are made of nonwoven, nylon/polyester fiber. Use in machines that run 150 to 3000 rpm.