The Union Pacific 3901 HO Diesel Locomotive is a detailed model replica of an Electro-Motive Diesel (EMD) train in 1:87 scale. This ready-to-go pre-built locomotive features a Bo-Bo wheel configuration, analog control system, and two-rail system for smooth operation. With a striking yellow, gray, and red color scheme, this locomotive is perfect for model railroad enthusiasts aged 17 and up who enjoy collecting trains from the Union Pacific corporate roadname. Made of plastic, this Diesel Locomotive is a must-have for transportation-themed model railroad layouts.