Abrasive Pad Material Application Concrete Disc Diameter 20 in Abrasive Grit 25 Maximum Speed 600 RPM Rotation Counterclockwise Estimated Blade Life 30 000 sq ft Wet or Dry Use Dry/Wet Blade Length 1 1/2 in Number of Pieces 1 Product Type Heavy-Duty Concrete Prep Pad Application Concrete Prep Compatible Tool Type Rotary Automatic Scrubber Single Disc Flooring Machine