Dual Booster Cable Wire is a 2, 4, 6, and 8 gauge booster cable wire with highly conductive, 100% copper stranding it maximize current transfer. The TPE insulation on the 2-gauge wire, and the PVC insulation on the 4, 6, and 8 gauge wire, provides a durable barrier to protect against weathering, chemicals, and abrasion. The cables are both tangle-free and color-coded for easy installation and polarity identification.