Milwaukee Tool says its Glass and Tile Bits are engineered with sharpened carbide to drill faster than the standard alternative. The carbide head provides increased durability when drilling at high speed into tile and glass. The bits are designed for use with drill drivers only (not impact drivers) and are not recommended for use on porcelain tile. Available in four sizes, from 1/8 to 5/16 inch, the bits retail between $7 and $15. milwaukeetool.com
