The Koki 50000 series is a container freight car manufactured from 1971.

The Koki 250000 series was introduced in 1985 after the Koki 50000 series was modified to handle 100km/h and 1,200t trains. When it was first remodeled, it was painted in the same Red No. 3 color as before, but later the body was painted green for easy identification.

When it was first introduced, it was used for high-speed freight trains on the Tokaido Main Line, but after the appearance of the Koki 100 and Koki 101 series, it was transferred to high-speed freight trains on the Tohoku Main Line along with the Koki 350000 series.

• The handrails on the deck are reproduced with additional features
• The bogies are reproduced with reinforced versions
• Taillights light up (only on the handrail side)
• Handrails are already installed
• Transfer sheet for changing the car number is included
• Car number is already printed
• Equipped with a constant light board
• Silver wheels are used

Vehicle:

• Koki 250777

Accessories:

• Transfer sheet: Vehicle number