10 Gauge Marine Wire 10 AWG Marine Grade Wire Include 10 Gauge 30FT Red & 30FT Black,10Awg Tinned Copper Boat Electrical Cable for Automotive Boat Speakers Lighting Solar Outdoor RV Camper Trailer. Heavy Duty 10 Gauge Marine Wire:Our 10 AWG marine wire is made of tinned copper to make sure good conductivity,corrosion resistance, high durability,flexibility,stability for a long-lasting performance.