Prototype: Six German Federal Railroad (DB) type Fad 155 (former OOtz 41) Erz IIId four-axle hopper cars. Version with a high upper hopper, two unloading hatches per side, and end brakeman's platforms. Used to transport iron ore. Standard design welded pressed sheet metal trucks, with girders welded in place as reinforcement. The cars look as they did at the end of the Sixties.
Model: The hopper cars have detailed construction with different car numbers. All of the cars have brakeman's platforms and a set wheel at the end. The hopper cars have load inserts and are loaded with real scale-sized iron ore. All of the cars are individually packaged and there is a master package. Length over the buffers per car 11.5 cm / 4-1/2.AC wheelset E700150.

The class 043 Öl heavy steam freight locomotive to go with these cars can be found under item numbers 22986 in the Trix H0 assortment.

An Erz IIId hopper car set with 12 more car numbers can be found in the Märklin H0 assortment under item number 46213 along with information about the required DC wheelsets.