Boat owners and marine technicians, this 12/2 AWG marine wire is exactly what you need for reliable electrical systems on the water! The red and yellow duplex design makes polarity identification easy, and the tinned copper construction resists corrosion in harsh marine environments. This wire is BC-5W2 compliant and UL 1426 listed, meeting all ABYC and USCG specifications - so you know it's built to marine standards. The high-grade PVC insulation resists moisture, flame, acid, alkali, oil, and gasoline, providing excellent protection against the elements. Rated for 600 volts with temperature tolerance of 105°C dry and 75°C wet, it handles various marine electrical applications beautifully. The Type III fine stranded copper is flexible and easy to work with, making installation much smoother than stiff wiring. I've used this for everything from pontoon boat lighting to bass boat electrical systems and it's performed flawlessly. The tinning really does make a difference in corrosion resistance compared to bare copper. Made right here in the USA with over 10 years of expertise behind it. If you're doing any marine electrical work on boats, trailers, RVs, or other outdoor applications, this wire is definitely worth using. The quality is professional grade and it gives you peace of mind knowing your electrical system is using components designed specifically for marine conditions. Much more reliable than automotive wire that isn't built to handle moisture and corrosion. A solid investment for anyone serious about marine electrical systems.