• Best For: Contractors cutting concrete, masonry, brick and block with a saw that takes a 12-inch blade on a 20mm arbor rather than a 1-inch arbor.
• Highlight: Same 12-inch, .125-wide turbo segmented cutting design and cooling slots as 160989, but with a 20mm arbor for saws that use the metric size.
• Expert Note: The Z suffix marks the 20mm arbor; do not order 160989Z for a 1-inch arbor saw, which needs 160989 instead.