Create a cut stone look for your double track, HO scale tunnel. Easy to color plaster castings. Meets NMRA specifications. Color with Earth Colors™ Liquid Pigment.
Outside: 8 1/16 in w x 5 1/4 in h (20.4 cm x 13.3 cm)
Inside: 4 3/4 in w x 3 7/8 in h (12 cm x 9.84 cm)