Make sure that you never lose sound quality when you drive with this ACDelco 20925642 Radio Antenna Cable. It is constructed with high-quality materials such as copper terminals for an optimum electric connection. The car radio cable is built with an insulated shell to protect the insides from acid, oil and more. It is safe for temperatures up to 257 degrees F. This car radio extension cable is made with a commonly sized strand for improved flexibility. The steel embedded casting makes it even more reliable.