The MTH 20-66097 Baltimore and Ohio Sleeper/Diner 2 car set is a pre-built model train passenger car set designed for O gauge model railways. Made of plastic and diecast materials, this set features a 1:48 scale replica of the Baltimore and Ohio corporate roadname's sleeper/diner cars, complete with light function capabilities. Perfect for hobbyists aged 17 years and up, this ready-to-go set is a great addition to any model railroads and trains collection, offering a realistic and detailed representation of classic passenger cars from the Baltimore and Ohio railroad.