This detailed Atlas Classic Silver Alco RS3 locomotive is based on one of the most popular Alco road switchers. The model features applied handrails, grab irons and other details. This HO Scale diesel comes equipped with an 8-pin socket for easy decoder installation when you're ready. The Alco RS3 features a five-pole skewed-armature motor with dual flywheels, directional LED lighting and AccuMate(R) magnetic knuckle couplers.