ITEM NAME:Car F1-Z Double-sided Turbine Turbo Charger Air Intake Gas Fuel Saving Fan Descriptio n Description: Material: aluminum alloy Color: black Dimensions: length 7.5CM, inner diameter 6.0CM, outer diameter 6.4cm Model: General Features: 1. Greatly improve the torque in the mid-bottom speed of the car and increase the intake air flow. 2. It is convenient for the gasoline in the cabin to burn more fully, and the throttle feels lighter and more flexible. 3. It can also play the role of fuel saving, fuel saving rate is 5%-15% or more, regardless of the model, easy to install. Package included: 1Pcs double-sided turbine Note: 1.As different computers display colors differently, the color of the actual item may vary slightly from the above images. 2.Please allow 1-3 CM differs due to manual measurement. Thanks for your understanding. High quality buy, happy buyï ¼ Car F1-Z Double-sided Turbine Turbo Charger Air Intake Gas Fuel Saving Fan ghf.1Pcs double-sided turbine. It is convenient for the gasoline in the cabin to burn more fully, and the throttle feels lighter and more flexible. It can also play the role of fuel saving, fuel saving rate is 5%-15% or more, regardless of the model, easy to install.