Prepare your semi to be Ready for the Road Ahead , with the HD Value 20' 4-Gauge Booster Cable that provides an emergency power option for dead batteries. To make jumping a dead battery fast and easy, this replacement kit features a straightforward design that allows operators to connect to a live battery source with an active signal. Fashioned with reliable conductors to provide the best connection possible. FleetPride is your First Click in Heavy Duty .