Specification: Material: copper Maximum load: 300A Voltage: 12V-24V Connection: M8 Copper Screw Provides the most effective way to prevent car theft, and can cut off the performance of racing cars and prevent fires Prevents derailment of batteries during storage and repair of cars/ trucks Extend the life of your vehicle battery Durable and practical Easy to install and use With 1 removable keys Package included: 1 x battery disconnect cut off switch 1 x removable key