Made in USA - Surface Grinding Wheel: 4″ Dia, 3/8″ Thick, 1/2″ Hole, 80 Grit - 73149775 - MSC Industrial Supply
Amazon.com: LIZMOF Flap Disc 4-1/2 x 7/8 Inch for Angle Grinder, 120 Grit Flap Wheel for General Purpose Metal & Stainless Steel, Type 29 Grinding Wheel, Zirconia Abrasive Grinding Disc, 72 Beveled
4-1/2" X 1/4" X 7/8" T27 Depressed Center Grinding Wheel - 25 Pack — Benchmark Abrasives