This 100ft 3M flat cable with 40 conductors is a great addition to your electrical equipment and supplies. The cable is made of copper conductors with a stranded wire style and has a gray sheath color. The insulation material used is Polyvinyl Chloride (PVC) and the wire gauge is 29-28 AWG (0.29-0.32 mm). This cable is perfect for use in various industries and is made in the United States.