This mod includes the following airhorns made by Hadley: H00856 - 19" Airhorn H00855 - 22" Airhorn H00878A - 37" Airhorn The dimensions of the airhorns might not be exact to real life as this is my first Euro Truck Simulator 2 mod. The horns should work on most vanilla trucks + lightbars. (should work with 50k tuning lightbars as well)