This is a 2 rail O Scale DCC/ESU Santa Fe Dash 8-40CW diesel engine that is plastic. This engine has separately applied wire grab ions and handrail stanchions, new truck design with single point lubrication and is highly detailed. The DCC/ESU features sounds and oscillating ditch lights. Minimum radius curve is 36″ for this engine. The engine is made by Atlas Model Railroad Co. in 2018.