4 Gauge 99.99 % Oxygen Free Copper Big 3 Wiring Upgrade Kit ^^ Allows for upgrading the vehicle's battery ground wire, alternator ground wire, and alternator power wire ^^ Includes x1 6 Ft 4 Gauge Power Wire and x2 4 Ft 4 Gauge Ground Wires ^^ Includes x3 additional 3/8" Diameter Copper (Nickel Plated) Lugs, x3 additional Heat Shrinks ^^ Includes x10 8" #10 Zip Ties, x10 Cable Clamps, and x10 1/2" #8 Wafer Head Tek Screws