Lionel 6-17662 New York Central Bay Window Caboose features metal wheel & axles, diecast trucks, metal operating couplers, hidden uncoupler tabs, separately applied detailed handrails, detailed and painted interior with figures, red marker lights on each end, interior illumination, operating smoke unit with on-off switch, metal under frame detail, opening doors on each end of the caboose, standard O scale, rotating bearing caps, measuring 10-1/2 operating on 031 curves. Bay Window Caboose is new, no track time, comes with Lionel original box that shows some wear, smoke fluid and owners manual. The other vents are in the smoke fluid bag.