BUYTUS 3"/4" Diamond Dry Polishing Pad Granite Marble for Grinding Flexible Resin Sanding Disc Stone Concrete Polisher(#-3 Inches,5). Diameter: 3 inch / 80 mm, 4 inch / 100 mm; Arbor Size: 12 mm / 16 mm Use: Dry use Material: Diamond powder and resin Grits : 50#, 150#, 300#, 500#, 1000#, 2000#, 3000#(0# to 6#) Features: Thin, Sharp, Flexible Farbe:#-3 Inches