• Best For: Stone shops and installers whose fixture or fitting calls for a 1-1/2 inch opening drilled through granite.
• Highlight: Premium-grade MK-290GW granite bit at a 1-1/2 inch diameter, one size up from the 1-3/8 inch 158922.
• Expert Note: Confirm the thread on your drill before ordering 158923, and run this 1-1/2 inch bit wet the whole way through the stone.
