The PKP 401Z cars are a completely new design and represent the first large-scale production models of this car type in nominal size H0. The models have detailed reproductions of the side walls and, depending on the design, different sheet metal or wooden floor types. As further highlights, the cars have the finest painting and printing, close coupler guides and, depending on their prototype, among other things, attached hand wheels, shunting steps, hand rods at the ends and brake hoses. The chains and wedges for fastening the side walls have filigree and sharp engravings.