The Athearn Roundhouse HO RND17792 Conrail GP40-2 #3303 Diesel Switcher Loco is a HO scale model train locomotive of a Conrail GP40-2 #3303 switcher. It features a blue color scheme, light function, and is DCC ready. This model is part of the Roundhouse brand and is in like-new condition, making it a desirable addition for model railroad enthusiasts looking to expand their collection with a reliable and detailed locomotive.