Commercialized Hoki 5700 Chichibu Cement 8-car set that can reproduce the cement transport train seen on the Hachiko Line etc.
The Hoki 5700 is a 40-ton cement-only hopper freight car, and is characterized by its deformed box shape with the lower part of the hopper and the underframe constricted. As for the Chichibu cement specifications, DD51 was seen playing an active role as a double-headed cement transport train on the Hachiko Line in the Tokyo metropolitan area.