This features three chrome trumpets 17.5 inches, 15.5 inches, 11.5 inches in length. Its flat rack detachable design allows numerous installation options. Includes a BlastMaster valve upgrade kit that pushes 157.3 decibel. Includes a 150 psi, 100 percentage duty compressor, 3 gallon tank, bonus tire inflation kit with storage bag and all parts needed for installation.