The ATHEARN AMTRAK HO AMD 103 SEATTLE PORTLAND & SPOKANE TRANSIT UNPOWERED ENGINE is a detailed model of a diesel locomotive in 1:87 scale. This pre-built, ready-to-go engine features a multicolor paint scheme and BO-BO wheel configuration, perfect for HO gauge model railroad enthusiasts. With an analog control system and two-rail system, this Amtrak corporate roadname engine is the perfect addition to any transportation-themed collection. Made of plastic and measuring 2 inches in height, this 1.5 pound unit from Athearn is a must-have for model railroading aficionados aged 17 and up.