Features: 1.Application Range: Designed for 12V air horn, also compatible with horn, car, truck and vehicles which are quipped with with air horn, able to replace the old one. 2.High Performance: Has silver surface with chrome plating, that this pump can provide a stable performance, easy installation, matching for your car. 3.Size Description: Suitable voltage range is DC 12V for normal running, the length is about 115mm/4.5in, pump diameter is about 50mm/2.0in. 4.Good Sealing: Has good sealing for waterproof function, It is suitable for freshwater or saltwater environments, and also is suitable for almost any weather conditions. 5.Package Content: The package contains only a air pump, other accessories and tools need to be prepared by yourself, please make sure you are clear about this. Specification: Item Type: Air Pump Material: Aluminum Alloy Color: As Picture Shown Application: For Vehicles, Truck, Trains, Ships Product Size: Approx.115(L)50(Dia)mm/4.5(L)2.0(Dia)in Voltage: DC 12V Current: 15.0A Output Air Pressure: 0.1mpa-0.15mpa