Description
This 18″ straight tube is a Build-A-Bong base — the foundation you start from and then fit with the downstem, bowl, ash catcher or accessories you actually want. At 18″ it is the tallest base in the Human Grade straight-tube lineup, which means a long cooling column between the water and your lips. It is offered in Clear so any add-on glass you pair with it matches.
Why it stands out
- 18″ straight tube — the longest cooling column in the Human Grade base range
- Build-A-Bong base: choose your own downstem, bowl and add-ons
- Clear glass pairs with any accent color you add later
- Stable flat foot for tabletop use
Specifications
- Height: 18″
- Style: Straight tube Build-A-Bong base
- Finish: Clear
- Material: Borosilicate glass
What’s included
- 1 x Human Grade 18″ straight tube base
Compatibility
Build-A-Bong downstems, bowls and ash catchers are sold separately unless a listing states they are included.
Care
Tall tubes are top-heavy when full — empty the water before moving the piece.
Good to know
Staff pick. If you want a shorter version of the same design, the 15″ straight tube base is the same build.










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