Ancor Tinned Copper Battery Cable 3/0 AWG 81mm - Black - 50ft One Size. They are constructed with premium vinyl insulation that is rated at 600 volts 105 deg C dry and 75 deg C wet stays flexible even in extreme cold (-40 deg F/C) and resists salt water battery acid oil gasoline heat abrasion and ultra-violet radiation. The highest quality ultra flexible (Type 3) tinned copper stranding provides maximum protection against corrosion and electrolysis while resisting fatigue due to vibration and flexing. Specifications for Ancor 3/0 AWG 81mm Tinned Copper Battery Cable: Manufacturer: Ancor Color: Black Package Contents: Ancor 3/0 AWG 81mm Tinned Copper Battery Cable Ancor 118005: Tinned Copper Battery Cable 3/0 AWG 81mm - Black - 50ft One Size