Tool bits are small, replaceable cutting tools used in various machining processes, such as drilling, milling, and turning. They are designed to remove material from a workpiece to create specific shapes or finishes. Tool bits come in different shapes and sizes, depending on their intended use, and are typically made from durable materials like high-speed steel or carbide. In machining, tool bits are attached to machines like lathes or milling machines. The choice of tool bit affects the efficiency and quality of the machining process. Proper selection and maintenance of tool bits are essential for achieving precise results and prolonging the life of the tools.