Hi Si always makes scientific glass look easy, and they don't hold back on their downstems. These downstems are diffused with multiple holes surrounding a cylindrical shape. They are for use with a 18.8mm female joint and they have a 14.5mm female joint. These work as a replacement for existing Hi Si tubes and they will work great with any suitably sized pipe.
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All products on this site are intended for tobacco or legal dry herb usage.
Highlights
Made in the USA 🇺🇸
Handblown in San Leandro CA- Clear Glass
- Diffused Downstem
- Downstem
- Highest Quality Materials
- Thick Glass