022 Nn3 Laser-cut Two-lane Narrow Gauge Wood Grade Crossing, Gleisübergang Laser cut wood grade crossing for HOn3 and Nn3. Thinner, narrower and more rugged looking than our regular crossings. Each set includes two complete crossings, with laser etched boards & nail holes. Ready to paint and install on your road crossings Nn3-#022 (1.80" long)