Product details Bullet Point: 1. Made of light weight aluminum muffler tip for best effect. 2. Install on aftermarket muffler, catback, axleback muffler it will not produce any sound. 3. Easy to install and use. 4. The universal type is suitable for most cars, not suitable for elbow silencer. 5. There are different sizes for you to choose from. Specifications: Size: 32*43mm/37*48mm/44*55mm/56*85mm Weight: 67g/85g/100g/120g color: red Material: aluminum alloy Quantity: 1pcs Package package: 1 car imitation whistle Turbo Sound Simulator Whistle External Modified Muffler Exhaust Turbo Muffler Blow Off Valve Whistle Pipe Sound Simulator Whistle It Has Exquisite Workmanship, Beautiful Appearance And Unique Personality. The Price Is Reasonable And The Style Is Unique. Can Be Cleaned Repeatedly Without Affecting The Use, And The Permanent Appearance Is Bright As New.