About this 3D model

A collection of various sized tunnel portals in N, HO, and O scale to be used as tunnel entrances. They feature a stone texture as well a prominent keystone that can be inscribed with your railroad's initials, logo, or tunnel number. The pictured portals are the 2" and 5" versions, which should work well for N and O27 scale trains. The tunnel openings are of equal height and width. If there is demand I can easily make other ratios. Feel free to message me if you need a different size.