The Walthers HO 910-21011 EMD SD70M Norfolk Southern #2581 Locomotive is a pre-built diesel locomotive in 1:87 scale. It features DCC fitted technology, sound function, and is painted in the corporate roadname Norfolk Southern's multicolor scheme. This high-quality model is perfect for model railroad enthusiasts looking to add a realistic and detailed locomotive to their collection. Made by Walthers, a trusted brand in model railroads, this locomotive is sure to bring hours of enjoyment to any HO scale train layout.