• Best For: Fabricators and installers whose job calls for an exact 1-1/4 inch hole in a granite countertop or slab.
• Highlight: MK-290GW premium-grade granite bit in the 1-1/4 inch diameter, one step below the 1-3/8 inch 158922 in the same line.
• Expert Note: MK Diamond prints only the 1-1/4 inch diameter for part 158921, so confirm the thread and water feed on your drill before ordering, and keep water running throughout the cut.