• Best For: Tile and stone installers drilling 1-1/8-inch holes in ceramic tile or marble.
• Highlight: The 1-1/8-inch size of the MK-290 tile bit, one step above the 7/8-inch 159431.
• Expert Note: The rim style changes with size: sizes up to 2-1/4 inch are turbo-style, and continuous rim begins only on bits larger than that, so this one is turbo.