1. These products are used in floor restoration and stone surface polishing. 2. Hard pad,renovation pad,polishing pad 1. These products are used in floor restoration and stone surface polishing, good at sharpness, long lifespan, high efficiency.2. Grit:50#100#200#400#800#1500#3000#3. Diameter: φ80, φ100, φ125, φ150, φ180, φ200, φ225.Tel: 0086-592-5551199