This is a replacement for the stainless steel mouthpiece with three o-rings that is included in your Huni Badger kit.
You can thread this onto your Huni Badger and use it directly as a mouthpiece. You can also attach most 510 and EGO sized water bubblers or accessories on the market to it.
The Nectar Collector Huniguide Bubbler sold here is made to slip onto this securely.
When you are done, this mouthpiece stores perfectly into the magnetic cap, in the same side as the HuniTip.