Three Trumpet Train Horn, Air, Length 16 1/2 In., Width 14 3/4 In., Height 11 In., Material Brass, Finish Chrome, Exterior Mount Mounting, Decibels 152 dB, Pressure 90 to 110 PSI, For Use On Trucks With Existing Onboard Air System, Includes 10 Ft. of 1/4 In OD High-Pressure Hose, and Solenoid