Plarail Keikyu 2100 Series (Special Coupling Specification). Operation has been confirmed. This model is based on the 2100 series, which debuted in 1998 and features 2-door, all-cross seats. It seems to have been a particularly popular product among Keikyu original Plarail models. It's the first special coupling specification in Keikyu original Plarail, with a special coupling gimmick on the rear car, allowing you to connect and play with other Keikyu vehicles (special coupling vehicles). Instant purchase OK. Will be shipped via Yu-Packet Post.