ACDelco Professional Battery Cables are high quality copper electric cables with a cast lead terminal connections at the battery end of the cables. They feature a durable insulation that helps resist harsh under hood environments, and are a high quality replacement for many vehicles on the road today. These premium aftermarket replacement components are manufactured to meet your expectations for fit, form, and function. PROPOSITION 65 WARNING: Battery posts, terminals and related accessories contain lead and lead compounds, chemicals known to the State of California to cause cancer,birth defects and other reproductive harm. Batteries also contain other chemicals known to the State of California to cause cancer. Wash hands after handling.