• Best For: Small-diameter general purpose cutting on a 4-inch grinder across mixed masonry materials, rather than a blade bonded for one substrate.
• Highlight: The turbo rim on the MK Diamond MK-925D leaves a smoother, less chipped edge than the segmented blades in the MK-404D and MK-414D lines.
• Expert Note: The 20mm to 5/8-inch arbor covers both metric and imperial grinder spindles, so the same 4-inch blade fits either machine.