Firefly FRED – End of Train Device – Medium – N Scale Cheap Supply

Firefly FRED – End of Train Device – Medium – N Scale

The FireFly FRED is a flashing rear end device for N scale model trains, that works well on both DC and DCC, and is available in three lengths, short, medium and long. The short measures .395″ from the face of the coupler box to the king pin, the medium is .501″ and the long is .785″.