Cubitron 3M Green Corps Depressed Center Grinding Wheel - Metal Grinding Wheel - Quick Change Threaded Hub - For Angle Grinders - 4.5" x 1/4" x 5/8-11 Thread - 55960: Amazon.com: Industrial & Scientific
7" X 5/8"-11 Threaded Turbo Diamond Grinding Cup Wheel | Grinding Wheel - Benchmark Abrasives
7" Swirl Cup Wheel (Threaded) - Resinous Flooring Supply
5" Turbo Diamond Cup Wheels Grinding Concrete,Masonry,7/8" Non-Threaded | eBay
EDiamondTools 4.5 in. Diamond Grinding Wheel for Concrete and Masonry, 9 Turbo Segments, 5/8 in.-11 Threaded Arbor SWS4509A5 - The Home Depot