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Grav Labs Dual Action Double Joint Inline to Circ Perc Straight Tube

3.5 out of 5 stars from 2 reviews.

This new creation from Grav labs is a beautiful example of multifunctional glass. Featuring both a female joint for a bowl on the left of the piece, and a male joint for a nail and dome on the right; one can potentially consume both concentrates and dry herb at the same time! Along with this amazing multi-functional capability, this water pipe features an inline perc leading upwards to a domed shower-head perc. For those two timers, this is the piece for you! (Note: This piece features both a female and male joint.)

Joint Size:

14.5mm Female Joint


13 inches


  • Branded Glass
  • Clear Glass
  • Concentrate Rig
  • Inline Percolator
  • Comes with Bowl and Oil Dome Set
  • Designed in Austin TX
  • Male Joint with Female Dome
  • Showerhead

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Features of this Glass Water Bong

Inline Perc

These percs allow for a simple under the water diffusion.  Commonly a glass stem that runs beneath the water with slits that allow for the smoke to diffusion by passing through the water.

Bowl and Dome

Included with the purchase of this product is a flower slide and a concentrate dome set.  With both of these, you can use this to use both dry tobacco as well as oils and concentrates.

Showerhead Perc

A fairly simple perc shaped like a showerhead.  The vertical tube that flairs out at the bottom, with slits or holes for diffusion.

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Grav Labs

Grav Labs has harnessed a solid reputation for creating quality scientific glass. Smoke Cartel is an official retailer for Grav Labs. Here you'll find an excellent selection of bubblers, recyclers, hand pipes, water pipes, dab rigs, and other glass pipes by Grav Labs.

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