@janesuh5 @Lisasali Hi. These are individual bags and you can use this unit with other bags on the market. It comes with two size nozzles. The top comes off for easy cleaning in case a little liquid accidentally get sucked up in there. For under $20, it was a good experiment that has worked so far on dry ingredients. You don't wanna fill the bag completely full but say a couple inches down from the top for best results. Apparently there is a line on the bag, but I believe I read that you don't wanna overfill them.