Amazon.com: Norton Charger Plus Depressed Center Abrasive Wheel, Type 27, Zirconia Alumina and Aluminum Oxide, 5/8"-11 Hub, 4-1/2" Diameter x 1/8" Thickness (Pack of 1) : Industrial & Scientific
Norton 7" Flap Disc, Type 27, 7/8" Mounting Hole, Fine, 120 Grit Ceramic, 1 EA: Amazon.com: Tools & Home Improvement
Amazon.com: Flap Disc,6 In x 40 Grit,5/8-11 : Industrial & Scientific