4 Awg Black Extra Flexible Power Cable4 gauge cable for running power and ground lines to high power car amplifiers.A very flexible cable employing 1568 strands of 36 gauge bare copper wire in a fine-strand rope layFine-strand construction and black, soft PVC jacket deliver excellent flexibilityOutside diameter of this cable is 0.350″Insulation thickness is ~ 0.07″Longest continous length available is 100 footApoSoundAK4B