This tool provides homebrewers with a hands-free way to aerate wort as it is transferred from the kettle into the fermenter. This siphon sprayer works great to increase dissolved oxygen in your wort without having to rock or shake a heavy fermenter. Attach this aerator/diffuser to the end of your transfer tubing when filling your fermenter. This tool can also be used for fly sparging. It provides a wide, even spread of sparge water onto the grain bed for optimal sugar extraction. It can also help avoid stuck sparges. Works with 3/8" tubing.