KSEIBI 644030 41/2Inch Double Row Diamond Cup Grinding Wheel Gold for Angle Grinder Polishing and Cleaning Stone Cement Marble Rock Granite Concrete Surface Grinding. out of 5 stars. 572. 4in Wide THINSET REMOVAL BIT, Floor Scraper, SDS Plus!!! (4" X 10") out of 5 stars. 316.