• Best For: Floor prep crews with a 5/8-11 threaded grinder who want a 7-inch double-row turbo cup wheel.
• Highlight: Double-row turbo segments on a 7-inch (178mm) Supreme Grade MK-504SG-2, the larger size of that model.
• Expert Note: This is the 5/8-11 nut version of the 7-inch MK-504SG-2; the 7/8-5/8 arbor version is a separate part (158736).