Flat end mills are cutting tools used in machining processes, particularly in milling. They have a flat bottom and straight edges, making them ideal for creating flat surfaces, grooves, and slots in various materials like metal, wood, and plastic. The design allows for efficient material removal and precise cutting. These tools come in various sizes and can be made from different materials, such as high-speed steel or carbide. Flat end mills are commonly used in CNC (Computer Numerical Control) machines, which automate the milling process, ensuring accuracy and consistency in production.