MARINE GRADE BATTERY CABLE is tinned copper stranding for maximum protection against corrosion, electrolysis and fatigue due to vibration and flexing. Rated at 600 volts and 105 degrees C, the heavy duty insulation is resistant to heat and abrasion. Exceeds all UL 1426, US Coast Guard Charter Boat and ABYC standards. Size: 4 Color: red Length" 50