4, 6, or 8 conductor 13awg, stranded bare copper, PVC insulated, unshielded, PVC jacket, speaker wire. Available in black jacket.Cable: GC13/4 Cond. Gauge: (4)13 gauge Jacket: Black PVC O.D.: 0.420" Capacitance: 35 pF/ft. @ 1kHz D.C. Resistance @ 20°C: 2.1/1000"