With the sophisticated electrical systems on today's cars, a reversed connection could be expensive--and dangerous. That's why so many people get nervous about jump-starting a car themselves. Smart Jumper Cables are goof-proof and easy to use--just place the clamps on the battery terminals of each car, then connect the plug heads. The LED indicator tells you when the cables are connected correctly. It's easy and much safer, too, thanks to 11-foot cables that let you stand well away from potentially explosive battery fumes. Made with heavy-duty, tangle-free 8-gauge copper wire and durable copper-plated terminal clamps. Vinyl storage bag included.