Amazon.com: PFERD Bench Grinding Wheel Carbide Type | 7x1x1 inch, vitrified Bond, Silicon Carbide, grit Size 120 | 61793 - for use on Hard Materials, Included bushings 3/4, 5/8, 1/2 inch : Industrial & Scientific
5" X 3/4" X 1" COARSE GRINDING WHEEL(W/Bushing fits 3/4",5/8"& 1/2")
Avanti Pro 8 in. x 1 in. x 1 in. General Purpose Bench Grinding Wheel PBW080100A01F - The Home Depot
Forney Bench Grinder Wheel, Type 1, 60 Grit - 6" x 3/4" x 1" arbor hole w/adapters for 1/2", 5/8" & 3/4" - Walmart.com