A cut-to-length line is a machine used in metalworking to produce flat sheets of metal of a desired length. The machine can cut a coil of metal into sheets of a set length, width and thickness, and can be used for various types of metal including steel, aluminum, and copper. The line consists of a decoiler, straightener, slitter, and a shear or rotary cut-to-length unit. The decoiler uncoils the metal from a coil, the straightener flattens it, the slitter cuts it into strips, and the shear or rotary cut-to-length unit cuts it into sheets of a desired length. The sheets can then be stacked, packaged and shipped to customers. Cut-to-length lines are commonly used in the automotive, construction, and appliance industries.