Shop name:Chong Qing Shuo Yue Ke Ji You Xian Gong Si Features: High quality and brand new diamond segment grinding cup with high speed grinding and long service life. With holes designed to aid in and maintain a cool stable cutting pattern and reduced wear. Designed to 30% faster stock removal with double row grinding segments. Processed with high quality synthetic diamond coating provides for a more diamond scratch pattern. Great choice for people who do granite and marble worktops, headstones, tilers, builders. very fast grinding action on masonry, stone and concrete. Specifications: DIY Supplies: Tiling Type: Grinding Color: gold Material: Alloy Diameter of Hole: 22mm / 0.87inch Cup Shape: Dome Flange Diameter of Grinding : 150mm (5.91inch) / 180mm (7.09inch) (Optional) Thickness of Grinding Disc Body: 2mm / 0.08 inch Thickness of : 5mm / 0.20 inch Width of : 27mm / 1.06 inch , 33mm / 1.30 inch Max. RPM: 13600 Used for: High-speed Electric Grinder & Pneumatic , DIY Grinding & Polishing Wood, Metal & Mold Package Contents: 1 * diamond double row grinding Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.