3 Inch D80mm Back Stick Diamond Grinding Disc with Five Segments Diamond Polishing Pads for Concrete and Terrazzo Floor - China Resin Grinding Pad, Diamond Floor Grinding Discs | Made-in-China.com
DEWALT 4-1/2 in. x 1/4 in. x 7/8 in. Concrete/Masonry Grinding Wheel DW4524 - The Home Depot