These horns are not some cheap, tiny, air horns boasting claims to be something they aren't. These horns are the same size as the ones used on trains. The trumpets are extra-long to produce a deep, powerful tone, and feature a unique reinforcement for the lower trumpets. We decided to use solid brass when making this horn. We didn't just do the bells either (like other horns); no, we made the manifold out of brass too. Don't be disappointed with your investment! These horns are a full foot and a half long and are by no means a small toy air horn. In fact, we recommend that you install this horn on pickups, SUVs, 4x4s and other large vehicles.