Oh, there were 2 tubes in the item I bought, with a brush to clean, plus S hooks, and a couple of other things, so the tube can be hung if desired. One end is open to add pellets or chips, and to use a torch to light. Craig laid it down on the Weber grill grate, lit it, watched for a few minutes to make sure it had caught good, then put the strips down, covered, and let it smoke, with the vents open just a bit for air flow, until it stopped smoking, about 2 hours. He said it put out a good bit of smoke, and you certainly could smell it on the pork belly strips. You can use pellets or small chips.