Every floor pad in the 3M line is designed and manufactured with a uniform coating throughout, assuring longer-lasting performance in a variety of maintenance operations. Heavy-duty scrub pad removes dirt, spills, scuffs, and 1-2 coats of finish, leaving a clean surface for recoating. Green Seal[TM] certified. Use with Rotary or Automatic. Low Speed 175-600 RPM. Used with detergent solution to scrub hard surface floors. Washable and reusable pad is economical and helps postpone end-of-life disposal to l