You never hear their screams, but every jaywalker's face will tell you that El Jefe owns the road when you top off your compressed air system with the Trigger Horns El Jefe 3-trumpet stacked train horns. The trumpets produce 127+/-5dB, include valve, and are easy to install with basic tools.
CA Residents:
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov