Description: Durable and practical. This Double Propellers Fuel Saver Turbonator Fan provides a more dynamic control over the intake system by forcing powerful airflow into the combustion chamber at a high speed. Once the engine is started, the propellers spin to create a maximum turbulence in the incoming airstream. to allow enhanced fuel atomization in the combustion chamber, resulting in significant increase in horsepower and better gas / fuel millage. With simple installation steps, you can enjoy going faster and furtherer whilst saving gasoline all. Specification: Material: Metal Turbo height:50mm/ 2 Inch Length:75mm / 2.95 Inch Diameter:64mm / 2.519 Inch Package Includes: 1 Set of Turbocharger