Features:After you install this product, the compressed air blowing out of the exhaust makes your vehicle sounds like a turbo vehicle with the turbo system or blow away ventil.From high quality aluminium making it both lightweight and durable.Simple, installed on the car exhaust tail pipe. Installation:1. Simply loosen the screw on the turbo sound whistle.2. Place the turbo sound whistle into the exhaust tail pipe.3. Pull out the screw, in order not to fall when you're on the go. Notes:1. Please ensure that the exhaust tail pipe is large and lengthy enough to contain the turbo sound whistle.2. Professional installation is strongly recommended, products damaged through self-installation will not be refunded.3. Please check and then pull the screw on a regular basis. Specifications:Material: aluminium.Size: SNet Weight: 118g / 4.16 ounces. The pack comprises:1 x turbo sound whistle.1 small spanner.1 x screws.