... and fine grinding and polishing grainte. There abrasives are used for make rough,medium and fine grinding and polishing on granite slabs ... polishing of granite slabs.The relevant grit are as follows:For Rough Grinding: 8#,14#,16#,24#,36#,46#,60 ... Polishing: 80#,100#,120#,180#, 220#, 240#,280#, 320#,400#For Fine Polishing : 600#, 800#, 1000#,1200#,1500#,1800#, 2000#,2500 ...