Product information : Diamond cup grinding wheels designed for fast grinding with a smooth finishing. Made of high-quality steel cores as well as extremely impact-resistant and temperature-resistant diamonds for effective material removal with a long service life. Ideal for general purpose applications on concrete, stone and masonry, including: Grinding Cleaning Leveling Coating removal Diamond grit and bond: #30/40 with medium bond Equipment: Angle grinders Grinding disc for angle grinders, flex, concrete grinders, concrete mills, floor grinders and wall grinding systems of all popular brands with M14 thread spindle: Bosch Professional, Flex, Makita, Hitachi, Festool, Metabo, DeWalt, Einhell, Milwaukee and more. Product pictures Product Package : White box , color box , double blister . Shipping : Our Factory: Wuxi Dongyan Tools Co., Ltd, is a leading exporter and professional manufacturer of diamond tools and hand tools. Our factory are the supplier of Bosch, Makita and Dextor, over 10 years ! Our factory was established 1980s, and has a long history of more than 20 years. We are a high technology with the capability of production, sales, and research of new technology. We have a powerful technology team, advanced production line, and inspection equipment. We strictly conform to ISO9001-2000 quality control system. Inspection between processes follows the EN standard. At present we have been supplying the diamond saw blade, diamond core drill bit, diamond grinding wheel and so on. Our products have exported to Europe, America, Asia and enjoyed good reputation. Hope fully to be your trustworthy supplier in China. Our Service 4F: 1. Free sample cost. (size :105/115/125mm) 2. Free replacement of damaged goods. 3. Free design of new packaging for you. 4. Free testing of product quality for you.