... and fine grinding and polishing grainte. There abrasives are used for make rough,medium and fine grinding and polishing on granite ... polishing of granite slabs.The relevant grit are as follows:For Rough Grinding: 8#,14#,16#,24#,36#,46#,60 ... #For Medium Polishing: 80#,100#,120#,180#, 220#, 240#,280#, 320#,400#For Fine Polishing : 600#, 800#, 1000#,1200 ...