With the Sage Brew Group Cleaner 12 units, you can keep the brew group of your espresso machine clean and in good condition. Oils and coffee residue stay behind in the brew group while it¿s brewing coffee. That affects how your machine works. Use these cleaning sachets to thoroughly clean the brew group, so your machine keeps performing well and your coffee keeps its full flavor. You use 1 sachet per cleaning cycle, and after that, your machine is fresh and ready to use again. The package contains 12 sachets.