These 12 Woodland Scenics SceneArama Ready-Made Trees are a set of pre-built plastic trees designed for model railroads and trains. This set includes three packs of four trees each, suitable for HO or N gauge model railroads. The trees measure approximately between 2.5" & 3" tall are ready to go, requiring no assembly, making them a convenient and easy addition to any model railroad scenery. Perfect for adding realism and detail to your train layout, these ready-made trees from Woodland Scenics are a must-have accessory for any model railroading enthusiast.