The HO Stewart 8020/8021/9191/9190 F3A & F3B Phase I and F7A & F7B ABBA Set D&RG #552 is a detailed model of a Denver & Rio Grande Railroad EMD F3A / F3B Phase I diesel locomotive. Manufactured in 1993 for Stewart by Kato, this pre-built replica features black color, a Bo-Bo wheel configuration, and analog control system. Made of plastic and diecast materials, this 1:87 scale locomotive weighs 4 lbs and comes with Kato couplers for easy operation on a two-rail system. With light function and painted features, this unit is a great addition to any model railroad collection, offering authentic transportation-themed detail for enthusiasts. All four units are powered.