There are two wagons in this class. VZZF 1 is converted from VLEX 845 and VZZF 2 is ex VLEX 942. Both conversions were done in March 1993.
The wagons were converted for the transport of standard gauge freight bogies between Goninan Bendigo Workshops and North Melbourne.
In 1997, a VZZF was in storage at Bendigo Workshops. It featured about 18 wooden floor bolsters spaced evenly along the floor. Interesting observation was that the bolster extended over the floor sides about 150-200mm.