... renovation discNO.PictureDescriptionDiameter(inch)Thickness(mm)Grit size available1MRK-A renovation disc3"1250#,150#,300#,500#,800#,1000#,1500 ... 108Dry polishing disc(apply to marble)3"34"39Dry polishing disc(apply to granite)3"34"310Oxalic acid polishing disc(apply to marble except ... performance in grinding stone with polishing effect to get high gloss in a short time,as compared with conventional ...