Function: 1. Control car ignition, reduce power supply impedance and improve ignition efficiency. 2. Make the acceleration and starting smoother, make the car more sensitive. 3. Installing the circuit breaker can cut off the power of the whole car instantly, gives you the feeling of driving a racing car, gives you unlimited driving enjoyment. 4. Easy to install, no complicated tools needed, convenient to use. 5. A practical accessory suitable for RVs, ATVs and professional racing cars. Specification: Item Type: Engine Start Switch Material: aluminum alloy, plastic Optional Color: Blue Voltage: 12V 50A (universal) Scope of application: Suitable for motorhomes, off-road vehicles and professional racing car; Package List: 1 x engine start switch;