The Walthers Mainline 910-20375 HO Scale EMD SD50 Norfolk Southern #6506 is a replica of an Electro-Motive Diesel (EMD) in 1:87 scale, specifically designed for collectors aged 17 and up. This black plastic model features DCC Sound technology, analog control system, and is ready to go on a two-rail system. It is a detailed representation of the Norfolk Southern corporate roadname, perfect for enthusiasts of model railroads and trains. Made by Walthers, this diesel locomotive captures the essence of transportation and is a valuable addition to any train layout.