Electroplated diamond grinding disc 1.Diameter:100-350mm 2.Hole:22.23mm, 25.4mm, ... grit:40#,60#, 80#,as request4.suitable for cutting and grinding various hard materials, such as marble, granite, glass, ceramic, concrete ... and brick.5.smooth cutting surface, fast grinding speed, high efficiency6.If you have special requirements, we also ...