・A prototype of a car belonging to the West Japan area around 1980. There is no JR mark, there is a band on the passenger door and the front through door, and the toilet is reproduced in the form of a sink pipe.

・The prototype of the 6-car set is in the 0s. Reproduced with roof reinforcement, no taillight on the front side of the brake van, slit type cooler, small intake port of SHUFF 12 only on the 1-3rd side, and no gangway door on the front side of Oha 12.

- The prototype of the single Oha 12 is the late model, and the prototype of the Suhafu 12 is the early model in the 100s. There is no roof reinforcement, there is a tail light on the front side of the brake van, there is no presser edge on the gangway door window on the slow and fast room side, a mesh type cooler, the intake port of the SHUFF 12 is large and has both sides, the front side of Oha 12 Reproduced in the form with a gangway door.

- H rubber is reproduced in gray for each car.

- The 6-car set of Suhafu 12 / Ohafu 13 reproduces the jumper plug as a separate part.

- Reproduce the work of the side door.

- Reproduce the characteristic blue body painting and two white belts.

- Uses a snap-on bogie.

- The tail light on the slow / fast room side of Suhafu 12 / Ohafu 13 is lit (with a light-off switch).

・The 6-car set of Suhafu 12 and Ohafu 13 and the single item Suhafu 12 are equipped with a body mount type Arnold coupler at the front of the slow-moving room side, and the intermediate connection part of each vehicle is equipped with a tightly connected body mount coupler. The 6-car set and the single item SHUFF 12 come with a replacement knuckle coupler and a close-fitting coupler for the head.

- The front hood frame of the 6-car set of Suhafu 12 and Ohafu 13, and the single item Suhafu 12 at the front of the slow-moving room side is reproduced in silver. Also included are parts that can reproduce the front hood. Can be attached and detached as needed.

・A destination display sticker is attached to the 6-car set and the single item SHUFF 12. Includes different content.

- The 6-car set book case can store 6 12-series passenger cars and 1 locomotive for towing.