GRAV 4" Hammer Bubbler

Grav Labs

The GRAV® Hammer Bubbler is 4" tall and made on 32mm tubing. Its fission downstem diffuses smoke through water, and its feet stabilize the bubbler between uses.

No accessories are necessary for using this bubbler, and it functions best with approximately 0.5" of water.


  • Carb: On the Left
  • Designed by: Dave Daily
  • Filtration type: Cross-cut Downstem
  • Length/height: 7"/4"
  • Use with: Flower