For use between sections of Code 100 and Code 75 track, so for example could be used to incorporate a Code 75 Asymmetric 3- way Turnout (SL-E199) into a Code 100 layout, or to connect a Code 100 Streamline or Setrack 'fiddle yard' to a Code 75 scenic section.
Normally conductive; although the electrical connections between the 2 rail types can be cut to provide an electrical break. Supplied in a pack of 4.