The Cool Spectrum Transition Mode BNSF/Santa Fe Dash 8-40CW Locomotive in N Gauge is a ready-to-go pre-built model designed for children aged 8-11 years old. This replica of the Santa Fe locomotive features a red and silver warbonnet scheme with a Co-Co wheel configuration. Made of plastic and measuring 4 inches in length, this diesel locomotive by Spectrum comes with light function and painted details. It operates on a two-rail system and weighs 1 pound, making it a great addition to any model railroad collection. This locomotive was preowned, but unused, and appears in new like and excellent condition. Please review pictures for your own evaluation.