The 2004 Lionel 6-31960 O Gauge The Polar Express Steam Locomotive Set is a rare and sought-after collectible item. This pre-built locomotive set is a replica of the Polar Express train, featuring a 2-8-4 wheel configuration and a 1:48 scale. Made of plastic and diecast materials, this black locomotive set is designed with an analog control system suitable for ages 8-11 years. The set includes the locomotive, likely accompanied by matching cars and accessories, all with a Christmas theme perfect for holiday displays or model train enthusiasts.