Features: 1. High Quality Material - High quality aluminum alloy makes this device more durable and long time service. 2. Creative Car Decoration - With the motorcycle sound on your car, much attractive and interesting. 3. Beautiful appearance will make your car or motorcycle more fashionable. 4. Easy to Install - Easy to install, no need any complex process. 5. Our products use high quality material and advanced technology,having the characteristics of stable performance and high performance.The whistle is clamped on the exhaust pipe to make a sound through the airflow. Specification: Material: Aluminum Alloy Package includes: 1 x Turbo Sound Muffler Notice: 1.Due to the different monitor and light effect, the actual color may be a slightly different from the picture color. 2.Please allow 1-3mm differs due to manual measurement. (1 inch = 2.54 cm) Thanks for your support