strong finish capability, excellent polishing and durability specially used for marbel, glass and stone polishing Characteristic1.specially used for marbel, glass and stone polishing2.strong finish capability, 3.excellent polishing and durability4. metal hole Specification1.size:100x16mm2.Grits:C120#,C220#,C320#,C400#,C600#,C800#,C1200#,C1500#3.Max Speed:4300m/min PVA sponge wheel, OEM-5