This is an accessory or set of accessories for train model.
A nice "storage casket" (hmm...that sounds kind of morbid...let's just call it a "storage case!") for your N-gauge 1/150-scale train car collection. Holds up to six train models snugly in cut-out foam cells. It even comes with one little unpainted train car already in position just to let you know how they fit--very thoughtful!