Review on 🍾 FERRODAY Stainless Steel Carbonation Cap for Effortless Soda, Beer, and Water Bottle Filling by Maria Miller

It is exactly what it should be, comes with 5 spare o-rings, the serrated interior is removable which is great. I have tested this several times and the cap fits well on a 2 liter bottle. I'll be using it to make maple syrup cream soda (using Vermont maple syrup) and more even carbonation of kombucha (some batches, especially winter, don't carbonate as well as they do in warm weather) and maybe even a little portioned home brew with carbonate the Future. Great set to add to my brewing gear. Good price! See photo/video.