code 100 version
A barrow crossing for OO track. Fit one way and it is suitable for parallel Setrack tracks(67mm centre to centre), fit the other way and it is suitable for parallel streamline tracks(50mm centre to centre). Just need to fit code 100 rail.

code 75 version

fit 2 end to end to create double track spacing(50mm)

This is not an insert, but a full panel.