These jumper cable kits feature a set of 30′ 4 gauge jumper cables with a polarized socket on one end and battery clamps on the other end. An included 4′ cable permanently attaches to your battery and then you bolt the polarized socket to an accessible place on your vehicle. When you need to jump start another vehicle you simply plug the two polarized sockets together and attach the clamps to the vehicle with the dead battery. Kit comes complete with necessary hardware and dust cover.