Prototype: Sulfuric acid tank cars, used on the German Railroad, Inc. (DB AG). Privately owned cars painted and lettered for the firm Aretz GmbH & Co., Krefeld, Germany. The cars look as they currently do in real life.
Model: The cars have detailed, partially open frames. The side sills are u-shaped sections with cable beckets. The trucks are a Minden-Dorstfeld design. The cars have separately applied work platforms. They also have separately applied brakeman's platforms. The cars have different car numbers and come individually packaged. Total length over the buffers 43.8 cm / 17-1/4".