B Train Shorty Floorboard Set for 4 Cars - 23 This is a set of floorboards for 4 cars, compatible with B Train Shorty. In addition to the genuine parts (running truck T, T Kai), KATO small vehicle trucks and Greenmax pin-mounted trucks can be attached. If you wish to purchase multiple sets, please comment. (If multiple people express interest, the person with the highest offer will be given priority, so we may not be able to fulfill all requests.)