Feature 1Application: Fit for car, vehicle, motorcycle, yacht, boat, SUV, bike, buses, pickup, sea vessels, etc. 2135DB Loud: The 4 trumpet air horn is designed with 135DB super loud sound level, practical in use. 3Durable Material: Using chrome plated zinc to ensure maximum strength and durability and long service life. 4Easy Installation: Four trumpet chrome air horn has electric valve and flat base, includes basic mounting hardware, simple to install. 5Striking Appearance: With a polished shiny chrome horn has a striking appearance, can also decorate your vehicle.Item Type:4TrumpetAirHornMaterial: ChromePlatedZinc4 Speakers Size: 165mm/6.5in, 230mm/9.06in, 295mm/11.61in, 350mm/13.78in, 90mm(Dia)/3.54inVoltage: DC 12V/24VCurrent: 4.0ASound Level: 135DBOperating Pressure: 0.5Mpa-1.0MpaFitment: Suitable for 12V/24V vehicles, such as semi/pickup/RV/SUV .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x 4TrumpetAirHorn1 x Hose1 x Fixing Bracket4 x Screw4 x Nut4 x Gasket