G.I. Tank And Model Smokers Fluid, works great in GI Tank Smokers, as well as the stock units that come in Heng Long Taigen Torro and Tamiya Smoke Units! Also works with most G and HO Gauge Trains including Bachmann, Athearn, LGB, Aristocraft, as well as the Huina 1580 Crawler Excavator! The best available petroleum based smoke fluid in an upgraded child resistant dropper bottle. Trains, Truck, and Taigen and Heng Long Tanks pictured are obviously not included. The small leaky bottles that come with your tank contain just .25 Fluid Ounces in a .5 Ounce Bottle. Our formula works better with more smoke and less corrosion than the stock oil. This listing is for a 2 FLUID OUNCE Bottle, Made in USA!