Jump start watercraft quickly and safely with Rallys Lighted 10-Gauge Marine Jumper Cables. Lighted, 20 booster cables make it safer and easier to jump a dead battery in low-light conditions. Copper cables are corrosion-resistant, as are the color-coded clamps. Cables remain flexible in extreme temperatures. Length: 20 Cancer and Reproductive Harm- www.P65Warnings.ca.gov.