The Arizer Replacement Balloon Pack is designed for the Arizer Extreme Q. The glass mouthpiece and the O-rings are not included in this set. The pack includes six units of food grade balloons or bags. There are two ways to vape using a desktop unit, one is a whip and the other is the balloon. The benefit of the latter option is the freedom of movement since the user can bring the material to vape without the need to bring the desktop unit. You can also use and re-use the bags several times, up until you notice a drop off in vapor quality. At which point, you need the Arizer Replacement Balloon Pack.