... Electroplated diamond grinding disc 1.Diameter:100-350mm 2.Hole:22.23mm, 25.4mm, 70mm 3.Diamond grit:40#,60#, 80#,as request4.suitable for cutting ... and grinding various hard materials, such ... , glass, ceramic, concrete and brick.5.smooth cutting surface, fast grinding speed, high efficiency6.If you have special requirements, ...