Double-wall, T304 stainless steel, TipS-2.25 "inlet x7.25" long outlet 3.25 "x 2.75", automobile silencing decorative tail throat, which can not only prevent the deformation of automobile exhaust pipe, but also boost the pressure and disturb the flow, and also reduce the noise from exhaust pipe to a certain extent, making the sound beautiful. However, according to the salesperson, many car owners buy it because it has a strong decorative function.