... 4'' WET Diamond abrasive polishing tools DiameterSizeGrit No.ThicknessUse Type80mm3''60#,100#,200#,300#,450#,550#,600#,800 ... use100mm4''60#,100#,200#,300#,450#,550#,600#,800#,1200#,3000#5mmDry use/Wet use125mm5''60#,100 ... #,200#,300#,450#,550#,600#,800#,1200#,3000#5mmDry use/Wet use150mm6''60#, ... 100#,200#,300#,450#,550#,600#,800#,1200#,3000#5mmDry use/Wet use180mm7''60#, ...