B Train Shorty Floorboard Set for 4 Cars 22 This is a set of floorboards for 4 cars, usable with B Train Shorty models. In addition to the genuine parts (running chassis T, T Kai), KATO's small vehicle chassis and Greenmax's pin-mounted chassis 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 your request may not be fulfilled.)