Diamond cup wheel or diamond cup grinding wheel is one kind of diamond tools for grinding concrete, granite, marble, and other stones. It is mainly used on angle grinders, but also can be used on floor grinders. Generally, there are 2 different technologies used in diamond cup wheels: one is the sintering type, and the other is the high-frequency welding type. The density of the segments of these 2 types of diamond cup wheels is different. The segment of sintered diamond cup wheels has a lower density. However, the density of high-frequency welded diamond cup wheel is much higher, which brings a longer lifespan. Single row diamond cup wheel is one of the common shapes and widely used for grinding stones and concrete. This K01 4 inch diamond cup wheel is high-frequency welded and has a long lifespan. The diameter is 100mm, and there are 7 segments on it. The connection type can be M14, 22.23, 5/8"-11. Sunny Superhard Tools can provide various kinds of diamond cup wheels with diameters from 100mm to 230mm. Excellent diamond formulas are developed for grinding different stones and concrete. 4 inch single row diamond cup wheel for grinding stone and concrete. High-frequency welded diamond cup wheel has a long lifespan. Excellent bonds for different hardness of stones and concrete. High performance & competitive price. Optional Specifications: Optional size 100mm, 115mm, 125mm, 150mm, 180mm, and 230mm Optional connection 22.23mm, M14, and 5/8"-11 Optional diamond grit 36#, 46#, 60# and others Optional bond type extremely soft, very soft, soft, medium soft, hard, and very hard SYF-K01