Grav Labs 5" Upline Hammer Bubbler

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Another great product from the Grav Labs Upline lineup by Micah Evans. The 5" Grav Labs Upline Basic Bubbler features forced stacked percs all the way up with a penetrating diffused downstem, layback flute including a trio of restrictions as a secondary cooling apparatus, and ergonomic carb and mouthpiece, making it one of the most functional push-bowl bubblers ever designed.


  • Length: 5"
  • Thick Boro Glass
  • Stacked Percs Through the can and mouthpiece
  • Large push bowl
  • Color of the Upline Decal will vary