This is a professional great quality 125mm diamond double row segment grinding cup wheel disc. Suitable for grinding masonry, ceramics, terrazzo, marble, tile, concrete, granite and stone. Features: High quality and brand diamond segment grinding wheel cup with high speed grinding and long service life. With air holes designed to aid in and maintain a cool stable cutting pattern and reduced wear. Designed to provide 30% faster stock removal with double row large grinding segments. Processed with high quality synthetic diamond coating that provides for a more consistent diamond scratch pattern. Great choice for people who do granite and marble worktops, headstones, tilers, builders. Provide very fast grinding action on masonry, stone and concrete. Specifications: Material: Diamond Color: Blue Diameter of Hole: 22mm / 0.87inch Cup Shape: Dome Flange Diameter of Grinding Wheel: 125mm / 4.92inch Thickness of Grinding Wheel Disc Body: 2mm / 0.08" Thickness of Gear: 5mm / 0.20" Width of Gear: 25mm / 0.98", 32mm / 1.26" Max. RPM: 13600 Used for: All 125mm High-speed Electric Grinder & Pneumatic Tools, DIY Grinding & Polishing Wood, Metal & Mold Item Size: Approx. 125 * 20mm / 4.92 * 0.79in (D * H) Item Weight: Approx. 417g / 14.72oz Package Size: Approx. 12.5 * 12.5 * 2.0cm / 4.92 * 4.92 * 0.79in Package Weight: Approx. 419g / 14.79oz Package List: 1 * Diamond Segment Grinding Wheel Disc