Norton Diamond Cup- Single Row 4-in Diamond 24-Grit Cup Wheel in the Abrasive Wheels department at Lowes.com
Norton 6" Diam x 1-1/4" Hole x 1/2" Thick, 220 Grit Surface Grinding Wheel Diamond, Type 1A1, Very Fine Grade, Resinoid Bond 69014192779 - 08701732 - Penn Tool Co., Inc
Diamond Blades, Cups & Bits | Norton Abrasives
Norton 200x25xMulti 60G Med/Fine Grinding Wheel White Al Oxide 66253124228 | tools.com