Diamond cup wheel is widely used in grinding concrete, granite, marble and other materials. Sunny SYF-K02 double row diamond cup wheel is a reliable and efficient diamond tools for grinding concrete. It can be used on angle grinder and other floor grinders(with adapter), with a high performance.  Sunny has constantly developed a series of diamond cup wheel to meet our customers' requirements for coarse grinding and fine grinding (polishing) of concrete, granite and marble.