The Lionel HO Scale Union Pacific Alco Diesel Locomotive 5506 is a ready-to-go model train engine in 1:87 scale, featuring a vibrant yellow color and made from plastic and diecast materials. Designed for use with a DC power type and analog control system, this locomotive is part of the Lionel franchise and bears the Union Pacific corporate roadname. Perfect for model railroads and train enthusiasts, this diesel locomotive is a great addition to any transportation-themed collection, representing the iconic Union Pacific railroad.