Grinding Wheel for Grinders,Grinding Wheel for Metal ,Aggressive Grinding for Metal (25 Pack, 4.5 Inch,1/4" Thick, 7/9"): Amazon.com: Industrial & Scientific
Norton 3-3/4" Diam, 1-1/4" Hole Size, 1-1/2" Overall Thickness, 150 Grit, Type 11 Tool & Cutter Grinding Wheel Very Fine Grade, Diamond, Resinoid Bond 69014191651 - 73556342 - Penn Tool Co., Inc
Resinoid Bond Grinding Wheels for HSS Tools - China Crankshaft Grinding Wheel, Roll Grinding Wheel | Made-in-China.com