Lionel: 2426510 NC & STL Milk Car #3900 O Gauge Once a critical part of satisfying the American diet, the milk train became part of our folklore and common heritage. This year's cars include some prototypical and some fanciful milk tanks to liven up your operations. Cars include opening doors and even a removable roof to view the detailed interior milk tanks. Features: Die-cast trucks and operating couplers Easy conversion to scale couplers Opening doors Removable roof Interior milk tank load PRODUCT SPECIFICATIONS Road Name: NC&STL Road Number: 3900 Gauge: O Gauge Min Curve: O36 Dimensions: 11.75"