Features: 1.Made of a 100% non?magnetic stainless steel material with a bright polished finish that will not rust. 2.It is specially designed for external use, very suitable for marine applications in saltwater environments, but can also be used for other vehicles with 12V systems. 3.The installation is simple, only two wires can be easily connected, and no om?board air system is required. 4.Package including air horn, 2pcs rubber gasket, 5pcs screw, 5pcs nut and 10pcs gasket, which can meet your needs. 5.This air horn will be a perfect choice for boats, RV's, SUV's and trucks, and the volumn is loud. Specification: Condition: 100% Brand New Item Type: Air Horn Color: Chrome Material: 304 Stainless Steel Power Source: 12V Size: Approx. 40x10.5mm/1.6x0.4in Application: For Boats, RV's, SUV's and Trucks Package List: 1 x 12V Air Horn 2 x Rubber Gasket 5 x Screw 5 x Nut 10 x Gasket