RooR Glass 14/18mm Gridded Bong Downstems

Meet the ROOR® Reducing Gridded Low-Profile Downstem—the gold standard for replacing or enhancing the heart and soul of your water pipe. Expertly engineered, this premium bong downstem combines high-end craftsmanship with functional innovation, delivering cooler, smoother hits through ROOR's signature X-Cut percolation design.

Superior Gridded Diffusion

At the base, the X-Cut gridded diffuser features precision-slit cuts that generate a high-volume bubble cascade. The result? Maximum smoke filtration and a hit that's noticeably smoother, cleaner, and easier on the lungs. It's the kind of pull that reminds you why you chose ROOR glass in the first place.

Precision Engineered for Performance

Each ROOR downstem is:

• Handblown in California using 16mm Duran Schott borosilicate glass

• Built for daily use and extreme durability

• Crafted with a gridded diffuser tip for elevated percolation and airflow

• Finished with a white ROOR® logo—your seal of authenticity

Designed to Fit & Flow Flawlessly

• 18.8mm joint at the top (connects to your bong)

• 14.5mm bowl joint at the bottom (fits all 14.5mm male bowls)

• Low-profile silhouette that complements any glass setup

• Available in multiple lengths to suit your specific piece

Whether you're upgrading or replacing, this downstem for bong setups takes your session to the next level.

Sizing Notes & Fitment

All ROOR® downstems are measured in ¼" increments, from the top of the ground joint to the end of the gridded tip.

Standard Size Guidelines:

• Classic Straight Tubes: 3½" to 4"

• Classic Beaker Tubes: 5¼" to 6"

Always measure your existing downstem before purchasing for a guaranteed perfect fit.
NOTE: See our listing diagram for complete measuring instructions.

Product Highlights:

• Reducing joint: 18.8mm to 14.5mm

• Premium ROOR® glass – made from Duran Schott tubing

• Gridded X-Cut diffuser for enhanced percolation

• Borosilicate glass – heat-resistant and ultra-durable

• Low-profile and clean design

• White ROOR® logo

• Handblown in California, U.S.A.

Don't let your water pipe choke.
Give it lungs with the ROOR® X-Cut Reducing Gridded Downstem—a high-performance essential for serious smokers who expect more from their gear.

Browse the entire RooR Glass collection here.

Added on June 10, 2020