Cutting tools, also referred to as cutters, are tools designed to remove workpiece material?typically metal?using one or more cutting edges. They are either single-point tools, such as turning and boring tools, or multi-point tools, like end mills and drill bits. As the name suggests, single-point tools have one cutting edge, or chip-producing element. These tools are commonly used in lathes to perform planing and shaping operations. Tool bits are examples of single-point tools. Multi-point tools have more than one cutting edge. These tools are used in holemaking and milling operations.