Hello Welcome to our store Quality is our first consideration with best service. Dimension:12x7.5x3.5cm/4.72x2.95x1.38inch(LxWxH) Weight:128g Package Include:1 x Exhaust Pipe Turbo Sound Fake BlowOff Simulator1 x Screws1 x Spanner Normally: S size is suitable for displacement of 1.0-1.6, and the diameter of exhaust pipe is 32-43mm M is suitable for the displacement of 1.6-2.0, and the diameter of exhaust pipe is 37-48mm L size is suitable for the displacement of 2.0-2.4, and the diameter of exhaust pipe is 44-55mm XL size is suitable for displacement above 2.4, and the diameter of exhaust pipe is 56-85mm [product introduction] Product Name: automobile exhaust pipe whistle, automobile whistle, throat drum, modified imitation turbine pressure relief sound Product color: Silver Gold Black Blue Purple Product features: the product has the same sound as a whistle. It is suitable for any model. It is easy to install, beautiful and generous. It is very fashionable and cheap. It is the first choice for decorating your car. Note that it's not the sound of a sports car It's the sound of the flute. Note: the product is only applicable to the straight exhaust pipe, and the bent exhaust pipe cannot be installed. Package Includes:1PCS Pick and choose as you like