HO Baltimore & Ohio 8 car heavyweight passenger set with 4-6-2 engine set Has 6 interiors. 4 cars have lighting but the lighting does flicker which I suspect a good contact cleaning would solve. My old fingers aren’t very good at that anymore so I leave that up to you. Engine does run well forward and reverse and the light works. Some engines and longer train cars do not necessarily (although they might) run well or at all on 18 inch radius curves and only perform well on 22 inch radius (or larger) curve track setups like mine. The descriptions are the best information I can give you as I know it. I take as good a care of my train items and train accessory items as I know how but these are USED units for the most part unless they are listed as new so they have been around for quite a while. You could and should expect there may be small pieces that are missing or they may have been repaired or there may be paint blemishes here and there. What you see is what you get but pictures cant capture every detail. If you have a question about anything, ask. And I’ll give you the best answer I can come up with. If you see anything I missed about listing this item, please let me know and I’ll correct it. Trains are not my full time job; they are a hobby. MAKE SURE YOU CHECK OUT MY OTHER LISTINGS.