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GRAV Round Base Glass Water Pipe
  • GRAV Round Base Glass Water Pipe
  • GRAV Round Base Glass Water Pipe
  • GRAV Round Base Glass Water Pipe
  • GRAV Round Base Glass Water Pipe
  • GRAV Round Base Glass Water Pipe
  • GRAV Round Base Glass Water Pipe
GRAV Round Base Glass Water Pipe

GRAV Round Base Glass Water Pipe

$109.99
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GRAV Large Round Base Bong — 12" Borosilicate Glass | 14mm Female Joint | Ice Pinch | Dry Herb Water Pipe (SKU: 38R.V2.0)

The GRAV Large Round Base Bong is the full-column expression of the Round Base series — a 12" borosilicate water pipe engineered for high-volume sessions where chamber capacity and thermal efficiency are non-negotiable parameters. The wide, stable round base anchors the platform under the full weight of a developed vapor column, while the concave neck and grip pinch deliver precision ergonomic control precisely where the draw demands it most.

The 4.75" removable downstem achieves maximum water-to-vapor contact within the base chamber — the longest filtration pathway in the Round Base series — while the ice pinch provides a second thermal stage above, allowing operators to radicalize temperature parameters on demand. A 14mm funnel bowl replaces the cup format at this scale, increasing herb capacity to match the column's output potential. This is not an entry-level instrument; it is a session centerpiece built to perform at the top of the range.

This full-sized tower serves as a high-capacity foundational asset for your broader hardware collective, adding a robust, deep-chugging instrument to your daily rotation. The standardized 14mm ground female receiver joint interfaces flawlessly with standard digital vaporization adapters, technical flower injectors, or aftermarket ash catchers from your existing gear catalog without physical adaptation. Integrating this 12-inch tower into your daily rotation delivers a substantial smoke expansion path that maximizes material translation while providing the classic, reliable GRAV structural aesthetic.

Key Features

  • Maximum-Depth 4.75" Removable Downstem: The longest filtration pathway in the Round Base series, maximizing water contact time for cooler, smoother vapor output.

  • 14mm Funnel Bowl Included: Scaled to match the column's increased draw volume; broader opening supports higher-capacity herb loads versus standard cup bowl formats.

  • Wide, Stable Round Base: Enlarged base diameter maintains structural balance under the full 12" column height without requiring an external support platform.

  • Concave Neck with Grip Pinch: Maintains ergonomic control and precise single-hand handling at the full column height where leverage demands increase.

  • Built-In Ice Pinch: Secondary thermal efficiency stage suspends column ice above the water chamber for extended cooling across the full draw arc.

  • Full 12" Borosilicate Column: Maximum chamber volume within the Round Base series, delivering the fullest, most developed vapor draws of the lineup.

Specifications & Fitment Matrix

  • SKU: 38R.V2.0 | Brand: GRAV
  • Height: 12 Inches
  • Joint Interface: 14mm Female (F) Ground Connection Port
  • Downstem Tech: 14mm / 4.75-Inch Removable Diffused Stem
  • Included Asset: 14mm Funnel-Style Herb Bowl
  • Primary Target: Dry Flower / Herbal Execution

Pros & Performance Advantages

  • Provides the largest chamber volume in the Round Base series for maximum vapor development per draw.
  • Dual thermal efficiency stages — water filtration plus ice pinch — provide uncompromised cooling performance.
  • Concave grip neck sustains single-hand control at the column heights where leverage is most critical.

Pro Care & System Longevity

  • Downstem Maintenance: Remove and flush the 4.75" downstem immediately after each session; the extended bore retains residue along a longer surface area than shorter stems.
  • Deep Cleaning: Use a long-handled brush to reach the full interior depth of the 12" column during periodic deep-cleaning cycles.
  • Transit Security: When transporting, never leave the downstem installed; remove and wrap independently to prevent joint stress fractures.

A 12" borosilicate column operating at this frequency requires a maintenance protocol that matches its output demands. Pink Formula Glass Cleaner is built for exactly this — penetrating the full depth of the round base chamber, the 4.75" downstem bore, and the concave neck channel to clear resin without compromising borosilicate integrity. For dry herb preparation optimized for the 14mm funnel bowl, the Hypnotic Spinner Aluminum Metal Herb Grinder delivers uniform particle output that sustains unrestricted airflow through the downstem at scale. For airway maintenance at the joint and downstem connection level, the Vessel Care Kit provides the precision tooling that a piece of this size demands between deep-cleaning cycles. When the setup moves, the BrightBay™ "The Mule" Backpack is the only transit solution with the structural depth to protect a 12" column in the field. All available at www.autobongs.com.

Products on this site are intended and sold for legal use by adults 21+ only. Keep out of reach of children. NOT for tobacco.

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