Check the listing for details. Nifeliz Big Boy Locomotive, Articulated Steam Locomotive Building Block Set. Color: Black, Condition: Used, Made in Unknown. Listed at 59.97 USD. The Nifeliz Big Boy Locomotive is a black articulated steam locomotive building block set that offers an upgraded version for enthusiasts of model railroads and trains. This set allows hobbyists to construct a detailed and functional steam locomotive with the added bonus of articulation for realistic movement. The black color adds a sleek and nostalgic touch to the overall design, making it a perfect addition to any train collection or a great gift for train lovers of all ages. Missing a couple pieces. You should be able to use Lego pieces to complete it or use it or pieces. Good for display.The Nifeliz Big Boy Locomotive is a black articulated steam locomotive building block set that offers an upgraded version for enthusiasts of model railroads and trains. This set allows hobbyists to construct a detailed and functional steam locomotive with the added bonus of articulation for realistic movement. The black color adds a sleek and nostalgic touch to the overall design, making it a perfect addition to any train collection or a great gift for train lovers of all ages. Missing a couple pieces. You should be able to use Lego pieces to complete it or use it or pieces. Good for display.