Shunting diesel-electric locomotive are used by american railway. The model is equiped by the motor with one massive balance wheel, the reconnectable lighting (according to the way), The locomotive has also 6-pin divide NEM651, preparation on the loudspeaker and the exchangeable coupling Kadee type 714 or Tillig.

The pattern of the model SW1200 was produced in General Motors Electro-Motive Division between 1954 and 1966 in the count more of 1000 pieces. It was the most extensive shunting locomotives on the american continent. Many types of the locomotives was produced according to the load – SW900, SW9 etc. The locomotives was used in the railway service (Canadian National).

Some accessories are enclosed in the package (couplings).