Model: The cars have a close coupler mechanism. The hinged hatches can be opened. Both cars are connected by a plug-in coupling. Length over the buffers 15.3 cm / 6".E700580 Trix DC wheelset.E700150 Märklin AC wheelset.
Prototype: German Federal Railroad (DB) type K15 double unit hinged hatches gondola. Used to transport freight sensitive to moisture.