Ancor Marine Grade wire is manufactured from tinned copper stranding for maximum protection against corrosion and electrolysis. The ultra-flexible (Type 3) stranding resists fatigue due to vibration and flexing. Premium vinyl insulation stays flexible even in extreme cold and resists salt water, battery acid, oil, gasoline and ultra-violet radiation. Insulation is rated at 600 volts, 105C dry and 75C wet; heat resistant Exceeds all UL 1426, US Coast Guard Charterboat (CFR Title 46) and ABYC standards Priced and sold by the spool