The Kato N Scale Gunderson MAXI-I Maersk Double Stack Car 5-Unit Set is a pre-built model train freight car set designed for N gauge railroads. These container cars feature a double-decker design and are painted in the Maersk corporate colors. The set includes 5 units and is ready to go with an analog control system for easy operation. Made of plastic and measuring 2 inches in height, these cars are perfect for model railroading enthusiasts aged 17 years and up who enjoy transportation-themed layouts.