All weather, heavy duty for truck and trailer connections. Tinned copper, color coded conductors meet A.T.A. Specifications. Available as 4, 6 or 7 conductor, the cable is covered with a heavy PVC jacket. Both 50-70-001 & 04915 contain 7 conductors in the listed gauges, but 50-70-001 contains more individual strands per wire than 04915. 100', Six 12ga & one 10ga wire.