Milling cutters are usually designed for specific tasks. An end mill side mills, a thread mill cuts threads, and a drill bit drills holes. This means that milling a component that requires several different types of cuts will often require the use of several tools. The timing from tool changes can add up over time, delaying production. If you want to find milling cutters that can perform multiple tasks, then you need to check out the drill mills for sale at Online Carbide.