Premium MaterialOur Exhaust Pipe Oversized Roar Maker is made of high quality aluminum, durable and easy to install. It holds well and won't come off. How to Install1. Loosen the bolt on the Turbo Sound Whistle. 2. Insert the the Turbo Sound Whistle into the tailpipe. 3. Tighten the bolt so as not to fall off while driving. Exhaust Pipe Oversized Roar MakerAfter installed this product, the pressure blowing out of your exhaust will make your vehicle sounds like a turbo vehicle with the turbo system or blow off valve. Widely ApplicationsThis product is suitable for all automobile models and brands. Use Car Turbo Sound can make your vehicle sounds like a turbo vehicle, so cool. QuantityThere is 1Pc Car Turbo Whistle in a package.