EWCS 4 AWG UL Approved Marine Grade Tinned Copper Boat Battery Cable Rated 600 Volts Spec - Made in USA! 4 AWG 420 Strands Fully Tinned Type lll Copper UL Approved Marine Boat Battery Wire MADE IN USA! Highly Flexible - Resists Acids, Abrasion, Alkali, Gasoline, Mositure & Oil Rated BC-5W2 600 VOLTS -20C +105C