Get the most out of your battery by using the ACDelco 4SD40X Battery Cable. It has a tough cross-linked synthetic rubber insulator casing that resists burning, softening or melting in high heat. It is also able to resist corrosion from chemicals and road splash. This automotive cable is made with 99 percent pure copper in order to maximize conductivity and quick cold weather starts. It is also lightweight for improved flexibility. A steel skeleton embedded in casting provides a more reliable electrical connection. It will be a handy addition to your car parts.