Product Name: DT-DIATOOL Thickened Resin bond diamond concrete polishing pads, concrete floor renew pads Specification: Diameter 100mm/4" , Total thickness 10.5mm, workable thickness>= 9mm Diamond Grit:#30, #50, #100, #200, #400, #800, #1500, #3000 Quantity: 6pcs/set MATERIAL: Industrial Diamond grain, Resin, Nylon buckle APPLICATION: For floor grinding machine Suitable for processing, repairing and renovating concrete floor, cement floor, terrazzo floor Not Recommended for very soft concrete. Use them from coarse to fine, the final polishing. Recommended speed is 2500RPM, Max capacity is 4000RPM Feature: Strong grinding force, good durability (>=9MM workable thickness),Low Cost Per Square Foot DRY or Wet Grinding or polishing, Dry working could be get better performance. Good brightness and not fade High temperature resistance ================THE END================