does anyone know what parts i need to make this i cant figure out what the black plastic with the bolts is i know how to make pvc train horns but this is a much larger scale i will appreciate any help. hornbasters tug threw me over the edge here but i figured i could make one louder bigger and cheaper for less money
The horn im trying to replicate located in video below
https://www.youtube.com/watch?v=A7KCpIpJnO0