Package contents - 5 pieces of 3 inch (80 mm) diamond wet grinding discs, grit 300 - 1 backing pad M10x80 mm - 1 mounting/connecting shaft Size and compatibility - Disc diameter: 3 inch (80 mm) - Disc inner bore: 12 mm - Disc thickness: 4 mm - Backing pad: M10x80 mm thread - Connecting shaft diameter: 8 mm - Suitable for wet grinding with water cooling Material and grit - Premium quality diamond abrasive grains - Grains applied by galvanic deposition for durable performance - Grit: 300 - Designed for subsequent polishing and refined finishing Performance and benefits - Fast polishing speed with high finish quality - Excellent wear resistance and long service life - After grinding and polishing, no scratches or color transfer to the stone - Unique resin bond provides strong cutting power, smooth finish, and durability - Resists staining; stone surface remains true to its color Product features - Resin-bonded diamond discs for reliable performance - High grinding power paired with rapid polishing - Smooth finish with minimal material removal per pass - Long-lasting discs that resist wear and maintain consistency - Designed to avoid leaving scratches or color on stone during finish work Applications - Polishing and grinding marble, granite, stone, glass, ceramic, terrazzo, and concrete - Ideal for surface refinement, scratch removal, and gloss restoration on stone and ceramic materials Use scenarios - Scenario 1: Restore a dull marble countertop by wet grinding with these grit-300 discs to achieve a glossy, scratch-free finish. - Scenario 2: Refurbish ceramic tiles in a kitchen or bathroom, removing light scratches and achieving an even, smooth surface without staining. - Scenario 3: Refine terrazzo or concrete floors, delivering a uniform, high-gloss finish while protecting the color and integrity of the underlying material.