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A drill bit is a versatile cutting tool used to create holes in various materials. It's typically a cylindrical tool with a pointed tip and cutting edges. The most common type is the twist drill bit, featuring spiral flutes to efficiently remove material. Other types include spade bits for larger holes in wood, masonry bits for drilling into concrete or brick, and hole saws for creating precise circular openings. Drill bits come in a wide range of sizes and materials, including high-speed steel (HSS), cobalt, and carbide-tipped, each suited for specific applications.