Hello Super it's great hearing from you! Well its all Trackmaster, the locos, and the Works Unit van. No, they are not 3D printed Snow Plows, that would be too easy. I hand molded them, it was alot of trail and error involved, not just pushing a button. The Works Unit van was modified to have two hooks on both ends, so that it could be connected to the twins. Oh well, I hoped you enjoyed it. PGM
Mike Arnett Customthomas