A coil decoiler is a machine used in metalworking and manufacturing industries to uncoil and straighten metal coils for further processing. It is designed to handle a range of coil sizes and weights and is typically used in applications such as stamping, roll forming, and slitting. The machine consists of a spindle or mandrel on which the coil is mounted, and a motorized or manual system to unwind the coil. Some coil decoilers may also include a leveling or cutting mechanism to prepare the metal for processing.