Train set with two dust silo wagons, type Uacs-x, from VTG. The four-axle container wagons of the Uacs design are freight cars for the transport of bulk and powdered goods. The wagons are classified according to their cargo: while the Uacs-x are loaded with industrial goods such as coal dust, the Uacs-y are used for transporting food products like soda or flour. The large originals feature a special epoxy resin interior coating and a pneumatic loosening device. Both designs, Uacs-x and Uacs-y, have the same basic structure with UIC bogies of type Y 25 Cs and a welded underframe. The wagons are filled through filling hatches on the container roof, which can be accessed via walkways. The unloading of the wagons is done through a compressed air system.