The Hammerstone 12' 8-Gauge 400 AMP Jumper Cables are designed for fast and efficient power boosting. With a thickness of 8 gauge and a length of 12 feet, these cables have the capacity to deliver 400 amps of peak power. The soft plastic storage case makes it easy to transport and store the cables, ensuring they are always ready to use whenever you need them. The Hammerstone brand is known for quality and reliability, making these jumper cables a valuable addition to any automotive tool collection.