Archer USA 4 in. x 5/8 in.-11 Thread Fine Grit Turbo Diamond Grinding Wheel for Stone Grinding STCW04F - The Home Depot
Amazon.com: 3 Inch 150 Grit Flat Diamond Grinding Wheel Cutter Grinder Power Tool with 1/2" Bore for Grinding Hard Alloy, Glass, Tiles and Ceramics 78x12.7x10mm : Everything Else