This is a professional great quality 150mm or 180mm diamond double row segment grinding cup wheel disc. Suitable for grinding masonry, ceramics, terrazzo, marble, tile, concrete, granite and stone.<br/>Features:<br />High quality and brand new diamond segment grinding wheel cup with high speed grinding and long service life.<br />With air holes designed to aid in and maintain a cool stable cutting pattern and reduced wear.<br />Designed to provide 30% faster stock removal with double row large grinding segments. <br />Processed with high quality synthetic diamond coating that provides for a more consistent diamond scratch pattern. <br />Great choice for people who do granite and marble worktops, headstones, tilers, builders.<br />Provide very fast grinding action on masonry, stone and concrete. <br/>Specifications:<br />Material: Diamond<br />Color: Silver<br />Diameter of Hole: 22mm / 0.87inch<br />Cup Shape: Dome Flange <br />Diameter of Grinding Wheel: 150mm (5.91inch) / 180mm (7.09inch) (Optional)<br />Thickness of Grinding Wheel Disc Body: 2mm / 0.08&#34;<br />Thickness of Gear: 5mm / 0.20&#34;<br />Width of Gear: 27mm / 1.06&#34;, 33mm / 1.30&#34; <br />Max. RPM: 13600<br />Used for: High-speed Electric Grinder &amp; Pneumatic Tools, DIY Grinding &amp; Polishing Wood, Metal &amp; Mold<br />Item Size: <br />Approx. 150 * 21mm / 5.91 * 0.83in (D * H)<br />Approx. 180 * 24mm / 7.09 * 0.94in (D * H)<br />Item Weight: <br />Approx. 547g / 19.30oz (150mm 6&#34;)<br />Approx. 745g / 26.26oz (180mm 7&#34;)<br />Package Size: <br />Approx. 15 * 15 * 2.1cm / 5.91 * 5.91 * 0.83in (150mm 6&#34;)<br />Approx. 18 * 18 * 2.4cm / 7.09 * 7.09 * 0.94in (180mm 7&#34;)<br />Package Weight: <br />Approx. 550g / 19.39oz (150mm 6&#34;)<br />Approx. 747g / 26.37oz (180mm 7&#34;)<br/>Package List:<br />1 * Diamond Segment Grinding Wheel Disc