Granite Diamond 7" Inch Polishing Pads Wet/Dry Set of 6+1 Backer Pad Grit 30 50 100 200 400 1500 Best Value Concrete Marble Travertine Terrazzo Engineer Stone counter top floor renew http://www.amazon.com/dp/B06XDP38PR 6 pieces of 7" / 180mm Pro Grade Wet / Dry Polishing Pad. We recommed wet use. 1 X Grit 30 50 100 200 400 1500. 1 Piece of 7" Velcro Pad Holder (5/8"-11 Thread). NOT M14 Thread. Velcro Pad holder's max capacity is 5000 RPM. Please don't use it with high speed grinder / polisher.