Water and Dry Diamond Polishing Sanding Disc Ø100 KGS Hybrid PRO Resin Velcro, for Marble, Granite and Natural Stone, from Grit 50 to 10000. Flexible diamond disc with Velcro attachment. Wet or Dry use for sanding and polishing marble and granite. Its application guarantees an optimal level of finish much higher than that obtained with conventional abrasives, no discoloration on the surface of the stone. Great longevity. KGS Innovation, WET & DRY. Swiss Diamond Technology.