The Giant produces a powerful sound to be heard. It is made with two sturdy roof supports that eliminate trumpet vibrations on the roughest roads. A front deflector cover provides protection against rain, road dirt, snow, bugs, etc. from entering the horn trumpet, protecting the sound and your investment. The air feeder hose connection is made through the base and is not externally visible. The Giant's beautiful chrome appearance will look great on any truck, and its superior performance will provide an alerting sound for a greater distance. Requires an on board air system. All needed mounting hardware is included. Spanish instructions included.