Trick Exhaust Whistle Tip Set of 3Includes:Trick exhaust whistleEasy to do!Fits in most exhaust tips!Each one Measures 1.75 long and 1.25 in diaInstructions included!Super noise maker!!Many uses for this item! - trick exhaust whistle tip gag gift joke,fake turbo whistle car exhaust noise,turbo exhaust car noise maker,whistle tip car noisemaker joke gag