The Atlas Master HO Scale GP40-2 Locomotive Pan American #511 is a highly detailed model train engine in 1:87 scale. Made of plastic, this multicolored locomotive features Lok Sound technology for realistic sound effects. This C-9 Factory New-Brand New grade locomotive is perfect for collectors and model railroad enthusiasts looking to add a high-quality piece to their collection. The Pan American corporate roadname adds a unique touch to this accurately represented locomotive.