The Mantua HO Scale Union 76 CX #10310 40' Single Dome Tank Car is a vintage model train accessory designed for collectors and hobbyists aged 17 years and up. This pre-built tank car features a 1:87 scale plastic construction with a two-rail system for easy operation. The analog control system allows for smooth and realistic train movement, while the painted Union 76 theme adds a touch of authenticity to any model railroad setup. Made in the United States by Mantua, this tank car is a charming addition to any HO scale rail system.