This Blair Line HO 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. See the entire line of Blair Line HO Scale wood grade crossings. 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 3-9/16′ 9cm.