Description: Universal 24V dual trumpets air horn Compact design for little room but make powerful sound Glistening chrome finishing and tuned train horn sound Great sound quality, extremely stable frequency Long service life, reliable working performance Specification: Material: Chrome Size Chart: Size: Approx. 410x170x80mm/16.14x6.69x3.15inch Package Includes: 1 Piece Horn 2 Pieces Bolts 4 Pieces Gaskets 2 Pieces Nuts Note: Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) Please check the size measurement and the picture carefully before making payment. Please understand due to the difference between different monitors, the picture may not reflect the actual color of the item