Grav Labs Clear Hammer Bubbler | Weedipedia

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    GRAV

    Grav Labs Clear Hammer Bubbler

    The GRAV® Hammer Bubbler is 4" tall and made on 32mm tubing. Its fission downstem diffuses results 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.