8 Pie Type Diamond Concrete floor polishing pads These pads are designed for shaping and polishing soft and hard concrete floor. Dry use. They are very popular and the best resin concrete floor polishing pads on the market. They are longer lasting and produce a great finish without leaving scratches. With velcro back. And velcro color can be changed as requested. More longer life Use with all concrete grinders or polishers One set including 30 ,50 , 100, 200, 400, 800, 1500, 3000 grit. Available sizes: 3" Thickness:10mm Dry Use. Item No. Size Grit No. Velcro Color Thickness C100350 3"/76mm 30 Orange 10mm C100351 50 Grey C100352 100 Black C100353 200 Blue C100354 400 Red C100355 800 White C100356 1500 Yellow C100357 3000 Dark Blue