... -MRK renovation discNO.PictureDescriptionDiameter(inch)Thickness(mm)Grit size available1MRK-A renovation disc3"1250#,150#,300#,500#,800#,1000#,1500#,2000 ... grains with resinoid.2)Supply a better performance in grinding stone with polishing effect to get high gloss in a short time,as compared with conventional ...