Unique product for making small scale smoke. The thin glass tubes included in this kit have a chemical in them that when exposed to air, makes smoke. The kit comes with the tubes, a glass cutter/breaker that removed the ends of the tubes, rubber plugs to seal the ends of the tubes for the next use and a puffer bulb. There is also a refill kit of 10 tubes available. This kit is great for making smoke in miniatures. You can also use it to make clothing smoke. You can puff a little smoke under clothing just before you roll.