1.black and red speaker cable 2.4, 6, 8, 10, 12, 14 ... twisted copper wires and each of the conductors with PVC insulation layer, and Aluminum foil if required ... protective cover of PVC (Red of Black). This type of cable is applicable to acoustic equipment.specification ... cable, flat,white,black,grey,or any color100m/roll or 305m/roll100m/plastic spool or 305m/plastic spoolRed/black speaker cable, ...