N Scale Double Track Random Stone Tunnel Portal -- 3.5 x 2.75" pkg(2)

N Scale Double Track Concrete Tunnel Portal 2-Pack -- 3-3/4 x 3-29/32" 9.3 x 9.7cm

N Scale Double Track Cut Stone Tunnel Portal -- 3-1/2 x 3-29/32" 8.7 x 9.7cm pkg(2)

N Scale Cut Stone Rectangular Bridge Pier 2-Pack -- 2-1/8 x 11/16 x 2" 5.4 x 1.7 x 5.1cm