Prototype: German Federal Railroad (DB) type Ucs 908 and Ucs 909 double chamber cars. Capacities 27.5 cubic meters / 971.15 cubic feet and 28.3 cubic meters / 990.41 cubic feet of fine bulk freight. Model: The cars have different car numbers in the set. They also have close coupler mechanisms. The cars have numerous separately applied details. Total length over the buffers 162 mm / 6-3/8". One-time series!