End mill sets contain multiple end mills in a range of sizes. They eliminate the hassle of buying individual end mills separately and are ideal for job sites that frequently use many different sizes of end mills in machining tasks. End mills have cutting edges on their nose and sides that remove material from the surface of a piece of stock. They are used on CNC or manual milling machines to create parts with complex shapes and profiles. Each end mill has flutes on its cutting head that carry the removed material away from the workpiece to prevent damage to the end mill or workpiece.