The HO Scale Locomotive Southern Pacific ATH72066 SD40T-2 is a detailed replica of an Electro-Motive Diesel (EMD) train in 1:87 scale. This pre-built model features a Co-Co wheel configuration, analog control system, and is ready to go on a two-rail system. The locomotive is made of plastic and stands at 2 inches tall, making it a great addition to any model railroad collection for enthusiasts aged 17 years and up. The Southern Pacific branding adds a touch of authenticity to this transportation-themed model. THIS LOCOMOTIVE WAS TESTED IN ORIGINAL BOX