Value Pack 5 Pieces Inclulded! Silicon Carbide Pads Are Designed for paint & Coating Removal From Floors. Cup Wheels are used for cutting, grinding and polishing concrete, hard concrete, marble, granite, field stones, paint removal and coating removal. Diamond Cup Wheels feature turbo style arranged segments to produce fast grinding and big holes to provide more efficient dust collection. Diamond Cup Wheels have a wide range of uses from simple form clean-up to the shaping and polishing of concr Disc does not require a back up pad - it has a plastic back. Diameter: 4.5" | GRIT 8 | Use: Wet or Dry Grinds Faster than conventional discs Ideal for grinding concrete, masonry and stone along with adhesives from concrete