... for Soft grinding / medium polishing Step 5: #800 for Extra polishing Step 6: #1500, #3000 for Final polishing Step 7: BUFF for ... Buffing Specification: Item No.DiameterThickness GritInchmmmm100mm4"801050#,100#,200#,400#,800#,1500#,3000#,Buff 50#,150#,300#,500#,1000#,2000#,3000#,Buff ...