Product Name : Intake FanDesign : Double TurbineMaterial : metalSize: inner diameter 6.0cm, outer diameter 6.5CM, length 7.5CMNote: the diameter of the intake pipe is greater than 6.4CM, you can directly plug the tube, less than 6.4CM, the need to change the tube can be installed.The double-sided turbine is installed on the intake hose of the engine. When the engine is started normally, the inertial tension of the natural intake of the engine is used to drive the high speed rotation of the space wheel disc, and a large amount of fresh air is continuously driven into the engine while rotating. , At the same time also according to the forced way to enter the air to produce eddy current, so that high-speed rotation of the air can be sprayed with fuel injection nozzle, but also can make the air hose within the air density greatly improved, the mixture efficiency Will be greatly increased, in the combustion will have a greater explosive force, actually played a way to enhance the power.installation:Double-sided turbo installed in the original car bellows and throttle between the intake hose, the installation of the time to look at the original car into the hose size and size of the power wheel itself with the thickness of the rubber collar, With three rubber collar with different thickness, the installation of the size of the inlet hose in accordance with the appropriate choice.Package Contents:2 x TurbochargerOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.