Black 10 AWG Tinned Copper Wire 25'. Ancor Marine Grade wire products are the longest lasting and most rugged available, exceeding UL 1426, ABYC and US Coast Guard Charter boat CFR Title 46 standards. They are constructed with premium vinyl insulation that is rated at 600V, 105 DegreesC dry and 75 DegreesC wet, stays flexible even in extreme cold 40 DegreesF/C and resists salt water, battery acid, oil, gasoline, heat, abrasion and ultra-violet radiation. Highest quality ultra flexible Type 3 tinned copper stranding provides maximum protection against corrosion and electrolysis while resisting fatigue due to vibration and flexing. Wire Gauge 10 AWG Ancor Marine Grade wire products are the longest lasting and most rugged available, exceeding UL 142