HO special Total length 50cm, six sets of bearings, with ordinary connecting lines, easy to connect.
Used to test, repair, display HO scale model train use, let the train idling above, to determine the train failure by identifying the train's operation, sound, etc.
Adapt to the HO scale train model of most brands on the market.
High-precision printing of 3d printed parts ensures installation accuracy and module strength.
How to use: Purchase as many kits as needed, connect the train as required, let the train run on it, detect faults or display.