General description These 6 PCS Diamond Floor Polishing Pads are designed for effective grinding and polishing of terrazzo, concrete, and cement surfaces. With a diameter of 4 inches (100mm) and a grit rating of 400, these pads are suitable for both dry and wet applications, providing strong grinding power and durability at a low cost per square foot. Technical specifications Diameter: 100mm (4 inches) Total thickness: 10.5mm Workable thickness: 9mm Grit: 400 Material: Diamond + Resin Other information Package Contents: 6 Polishing Pads Note: Light reflection and different displays may cause the color of the item to differ slightly from the real thing. The measurement allowed error is +/- 1-3 cm.