... scopesuitable for marble ,granite ,man-made stone ,all kinds of natural stone arc ,line ,edge grinding ,fine grinding ... repairing and revamping the granite, marble and artificial stone floor , liquid penetrant or hardener and densifier for ... 100#,200#,400#,800#,1500#,3000#,Buff(White/black)50#,150#,300#,500#,1000#,2000#,3000 ... #,Buff(White/black)Diameter(inch)3"4"5"6" ...