The Athearn Roundhouse HO Scale GP40-2 Diesel Conrail #3309 is a model train locomotive in 1:87 scale. It features a blue color scheme representing the Conrail corporate roadname. Made of plastic, this diesel locomotive is DCC ready and is suitable for HO gauge model railroads. It is a detailed replica of a GP40-2 locomotive used by Conrail, adding authenticity to your model railroad layout.