Color: As shown in the First image. Quantity and size : As shown in the title or description. Car Turbo Whistles Exhaust Pipe Sound Maker Loud Whistles Features: After Installing This Product, the Pressure Blowing from Your Exhaust Will Make Your Vehicle Sound Like Turbo Vehicle with Turbo System or Blow off Valve It is the Best Choice to Decorate or Improve the Appearance and Per For mance of Your Car Make Your Car Fashionable and Unique by Upgrading It Without Spending Too Much compatible with Most Cars, DIY and Easy to Install on the Car Rear Pipe.Install This Product to Make Your Car Stylish and Eye-catching While Driving;Improve Your Interest in Driving Made of Aluminum, Lightweight and Durable Easy to Install on the Rear Pipe of the Car Features:s Material: Aluminum Alloy Color: Black, Blue, Gold, Red, Silver Product Size: As Shown S: compatible with 32-43mm Exhaust Pipe Diameter M: compatible with Exhaust Pipe Caliber 37-48mm L: compatible with Exhaust Pipe Diameter 44-55mm XL: Suitable For Exhaust Pipe Caliber 56-85mm Include: Turbo Whistle + Key Package: 1 X Turbo Whistle 1 XWrench