MUSTANG-Z 3-Step Polishing Pad. Top-performance 3-step polishing pads in US market; Flower pattern helps keep the cooling water on the working surface more effectively; Premium quality diamonds inside ensure fast polishing and long lasting; The ripple texture on the resin surface helps the pads engage effective polishing from the very beginning; Material: Engineered Stone, Granite, Marble; Wet Use Only on Engineered Stone; Dry or Wet use on Granite & Marble. MAX RPM: 4,000.