Grav Labs Large Gravitron Gravity Bong

Grav Labs

  • $89.99
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Grav Labs Large Gravitron Glass Gravity Bong

Grav Labs brought sophistication to the basement-made gravity bong. Gone are the days of scissors and 2-liter bottles of Mountain Dew. The Gravitron bong is the first all-glass gravity system, so plastic pollutants can no longer infiltrate your smoke. 

The large Gravitron bong is 11 inches tall and approx. 4 inches in diameter. The outer base is designed to hold about 5.5  inches of water—the fill line sits right below the bottom of the GRAV decal. This represents Grav's second version of its iconic Gravity Bong, the main difference is that this piece is made with thicker glass and its 19mm female joint is designed to hold any 19mm male bowl.

To use the glass gravity bong, first pack the Grav 19mm funnel bowl with dry herb and then light it. After lighting, start to pull the inner bottle slowly upward, smoke from the bowl will fill the chamber. Once the bottom of the glass bottle is just below the water's surface, remove the bowl. You then use the 19mm joint as a mouthpiece. Lowering the bottle back into the chamber forces smoke up through the downstem in a pressurized flow as the user inhales from the mouthpiece. A rubber seal lines the base of the inside bottle, so the inner glass will not clink or scratch against the outer glass. This powerful gravity bong results in fast and massive hits. 

But don't be afraid to take a spin on the Gravitron Bong. It's a fun ride.

 

Only the Best from Grav Labs

The Gravitron Glass Gravity bong was designed by Grav Labs CEO, Dave Daily, in 2004 as originally the only product the company sold and was redesigned in 2021 to be more sturdy and more functional. The Austin-based brand remains a respected name in the scientific glass game. They design, manufacture, and distribute some of the most recognizable pieces on head shop shelves, most notably the Gravitron. The well-known design marks an important place in toker history, and the glass gravity bong is just as beloved today as it was then.

Shop By Brand

No matter what your preferred method of smoking may be, Glass City Pipes has something for everyone from industry-leading innovators like Tsunami, AMG Glass, and Empire Glassworks. We pride ourselves on sourcing the highest quality products from top-selling brands — both domestically and internationally — and offering them for the most affordable prices.

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Customer Reviews

Based on 14 reviews
93%
(13)
7%
(1)
0%
(0)
0%
(0)
0%
(0)
M
Mathew Rye
Graviton

Perfect! It helps get me away from the good ole two liter and tea pitcher !

K
Keenan Vanderbos

my order got “shipped back to sender” it just arrived today back to yall . i would like either a refund or just to send my order again : thank you

D
Daysen South
Too good

If you use good weed you can kill someone

A
Anne Camper-Barry
Nice piece

I got this for a friend for her birthday after watching a few review videos. She loves it! Highly recommend for those who enjoy GBs

N
Nick Tinker

Grav Labs XL Gravitron Gravity Bong

Customer Reviews

Based on 14 reviews
93%
(13)
7%
(1)
0%
(0)
0%
(0)
0%
(0)
M
Mathew Rye
Graviton

Perfect! It helps get me away from the good ole two liter and tea pitcher !

K
Keenan Vanderbos

my order got “shipped back to sender” it just arrived today back to yall . i would like either a refund or just to send my order again : thank you

D
Daysen South
Too good

If you use good weed you can kill someone

A
Anne Camper-Barry
Nice piece

I got this for a friend for her birthday after watching a few review videos. She loves it! Highly recommend for those who enjoy GBs

N
Nick Tinker

Grav Labs XL Gravitron Gravity Bong