1.black and red speaker cable 2.4, 6, 8, 10, 12, 14, 16, ... of tinned twisted copper wires and each of the conductors with PVC insulation layer, and Aluminum foil if required. ... of PVC (Red of Black). This type of cable is applicable to acoustic equipment.specification:Item NO.AWGFeature section(mm2 ... 305m/roll100m/plastic spool or 305m/plastic spoolRed/black speaker cable, 4, 6, 8, 10, 12, 14, 16, 18 ...