• Best For: Stone fabricators and installers who want a medium grade 4-inch cup wheel on a 5/8"-11 grinder.
• Highlight: The medium grade sits between the coarse and fine versions of the 4-inch MK-404 PW cup wheel.
• Expert Note: Pick the grade to match the job: this 4-inch cup wheel is medium, with coarse and fine versions of the same size sold separately.