This Blair Line N Scale Wood Grade Crossing is ready to install on your highway and road crossings. Similar to those found all over North America, laser-cut wood kits are detailed with laser-etched boards and bolt holes.Ready to install on your highway and road crossings, this kit includes prestained, laser-cut wood parts. Similar to those found all over North America, kits include parts for two complete crossings, with laser etched boards & nail holes. Each measures 1-13/16" 4.5cm.