The Gilbert American Flyer Trains 51-52 ALCO PA-1/PB-1 Diesel Locomotive Set 6-48130 is a replica of the Santa Fe railroad's diesel locomotive in 1:64 scale. This ready-to-go pre-built model features a silver color, Bo-Bo wheel configuration, and is made of plastic and diecast materials. With its analog control system and light/sound functions, this model is perfect for collectors and hobbyists aged 17 years and up. The locomotive set includes an AT&SF corporate roadname and operates on a two-rail system, making it a great addition to any model railroad layout.