AMERICAN FLYER REBUILT SUPER SMOKE UNIT. This is a genuine AF Gilbert smoke unit that was rebuilt to smoke like no other. This unit will puff much better than the original smoke units that came with the American Flyer engines and will last as long as you keep them wet with fluid. As soon as the puffing starts to weaken in strength, put in more fluid and it will start smoking. This smoke unit is GUARANTEED to last or I will replace it for free if it burns out for any other reason. The price is for one unit outright with no core charge. If you want your unit rebuilt or you want to send in a rebuildable core in exchange, I will credit you through PayPal in the amount of $10.00. That alone will reduce your net cost to only $24.99. Let me know in advance of your decision. Thanks.THIS SALE IS FOR A SMOKE UNIT ONLY, NOT THE MOTOR OR FRAME SHOWN WITH IT!! Please ask any and all questions before the last day so that I can be sure to answer them. I am not always available on the last day. Thanks for looking and good luck bidding. Here is a link to You Tube to view my rebuilt smoke units. > http://youtu.be/jd7M_SRrX74 Shipping will be by USPS First Class and the estimated cost will be shown when you view the product. I do combine shipping so if you are bidding on multiple items, please wait until I send you an invoice. Thank you and enjoy the bidding. I ship to the 48 continental states ONLY. No Alaska, Hawaii or INTERNATIONAL!! The customs paperwork is annoying and time consuming so please don't ask. Also, I do not close out items early.