This is a good example of the unpowered bogie with wheels from an English Electric Class 20 loco, all as per the photos and title for a 2 rail version.
The Hornby Dublin D8017 Class 20 Diesel Loco Non Powered Bogie L30 2230 2 Rail is ideal for model railroading enthusiasts looking for a realistic and detailed train that can be used on a 2-rail layout.