What You'll Need:
- Silicone Grommet
- Stem (Glass or Metal)
- Glass of Water
- Your Bong
Your grommet is what keeps the air in and ensures there are no leaks around the stem or body of the bong.
The glass of water is your grommet lubricant, this will ensure there are no unnecessary breakages when inserting the stem.
Stems come in a number of sizes and materials, for this we'll be using a glass stem but this method will work for a metal stem as well.