There's no mistaking that genuine train horn sound. Loud and deep, Kleinn 500 Series train horns will turn heads and move people -- big time! All 500 Series horns have reversible trumpets so you can get that realistic multi-directional effect, just like a real locomotive. Sturdy aluminum mounting brackets allow for under-body or rooftop mounting. When these horns sound you'll swear that you're standing on the tracks