• Best For: Stone fabricators and installers who need a full 2 inch opening cored through a granite slab or countertop.
• Highlight: Premium-grade MK-290GW granite bit at a 2 inch diameter, a larger bore than the 1-5/8 inch 158924.
• Expert Note: A 2 inch bit has a longer cutting rim than the smaller MK-290GW sizes, so keep water flowing steadily, and confirm the thread on your drill before ordering 158925.