The Kato 950013 HO Scale Air Horn 3 Chime Silver 2 EA Bag-VYZ is a set of model railroad accessories designed to enhance the details of your train layout. With a gauge of HO, these air horns are specifically made to fit model trains in that scale. The brand KATO ensures quality and compatibility with your train collection. Each bag includes two sets of silver air horns that will add a realistic touch to your model railroad setup. Perfect for collectors and enthusiasts looking to add a unique and authentic detail to their trains.