Model: The car frame is constructed of metal. The separately applied frame parts and the entire car body with many assembled separately applied parts are made of high quality plastic. The car has detailed, intricate frameworks of braced timbers. The car is loaded with acid containers. Prototype couplers are included.Minimum radius for operation 1,020 mm / 40-3/16". Length over the buffers 30.6 cm / 12-1/16".