Grinding Wheel for Paint, Epoxy, Mastic, Coating Removal (7" Arrow Seg - 5/8"-11 Arbor) Designed to remove paints, epoxies, mastics, water-proofing coating, markings & lines. Grind curb gutters, expansion joints, high spots, or prep surfaces for coating. Supreme Grade Arrow-Style diamond cup wheels contain higher grade and high concentration diamond than the premium series for extra long life,#30/40 diamondfor aggressive grinding andfast stock removal. 7" diameter, 10 segments, 5/8"-11 thread #30/40 diamond grit